Pathfinder
Editor, Senior Moderator
Greene County, Mississippi
/https://en.wikipedia.org/wiki/Greene_County,_Mississippi
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...
...
https://www.aphis.usda.gov/livestoc...za/hpai-detections/commercial-backyard-flocks
-
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Mississippi - Avian flu in poultry 2024-2026
- Thread starter Pathfinder
- Start date
Greene County, Mississippi
/https://en.wikipedia.org/wiki/Greene_County,_Mississippi
---------------------------
...
...
https://www.aphis.usda.gov/livestoc...za/hpai-detections/commercial-backyard-flocks
Commonground
Senior Moderator
Mississippi Board of Animal Health
December 23, 2024
Excerpt:
...On Monday morning, MBAH said they notified the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from the breeder has tested positive for highly pathogenic H5N1 avian influenza....
-snip-
Hobby poultry owners are encouraged to practice good biosecurity, be aware of the signs of bird flu and report illness and/or death in birds in the MBAH Online Reporting Form. The information will be taken to a state or federal veterinarian in Mississippi for assessment.
Dead birds should be double-bagged and refrigerated for possible testing. Precautions should be taken when handling sick or dead birds including proper handwashing, using gloves, wearing masks and sanitation of surfaces that come into contact with sick or dead birds to prevent the spread of bird flu to people.
According to MBAH, bird flu in birds can cause the following:
Biosecurity information and resources can be found HERE.
Situation updates and status reports about ongoing bird flu activities in Mississippi, along with critical disease-related information, will be posted online HERE.
https://www.wdam.com/2024/12/23/bird-flu-found-chicken-flock-greene-county-report-says/
December 23, 2024
Excerpt:
...On Monday morning, MBAH said they notified the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from the breeder has tested positive for highly pathogenic H5N1 avian influenza....
-snip-
Hobby poultry owners are encouraged to practice good biosecurity, be aware of the signs of bird flu and report illness and/or death in birds in the MBAH Online Reporting Form. The information will be taken to a state or federal veterinarian in Mississippi for assessment.
Dead birds should be double-bagged and refrigerated for possible testing. Precautions should be taken when handling sick or dead birds including proper handwashing, using gloves, wearing masks and sanitation of surfaces that come into contact with sick or dead birds to prevent the spread of bird flu to people.
According to MBAH, bird flu in birds can cause the following:
- Sudden death
- Lack of energy or appetite
- Decreased egg production
- Soft-shelled or misshapen eggs
- Swelling or purple discoloration of head, eyelids, comb, hocks
- Nasal discharge
- Coughing
- Sneezing
- Incoordination
- Diarrhea
Biosecurity information and resources can be found HERE.
Situation updates and status reports about ongoing bird flu activities in Mississippi, along with critical disease-related information, will be posted online HERE.
https://www.wdam.com/2024/12/23/bird-flu-found-chicken-flock-greene-county-report-says/
Treyfish
Moderator
From the audio: It’s critically important to know that this virus does not affect humans.:tiphat:
https://www.wlbt.com/2024/12/27/bird-flu-found-mississippi-chickens/
--------------------
Of course, it can infect humans. Jeez..such bad reporting...
https://www.wlbt.com/2024/12/27/bird-flu-found-mississippi-chickens/
--------------------
Of course, it can infect humans. Jeez..such bad reporting...
Last edited by a moderator:
Pathfinder
Editor, Senior Moderator
Copiah County, Mississippi
/https://en.wikipedia.org/wiki/Copiah_County,_Mississippi
----------------------------------
...
...
https://www.aphis.usda.gov/livestoc...za/hpai-detections/commercial-backyard-flocks
Commonground
Senior Moderator
MS Board of Animal Health confirms bird flu case in Noxubee Co.
6 minutes ago
NOXUBEE COUNTY, Miss. (WCBI) – The Mississippi Board of Animal Health has reported a case of the Bird Flu in Noxubee County.
According to the CDC, Bird Flu is a disease caused by avian influenza, a virus that usually spreads between birds.
-snip-
More details are expected to be released by the Mississippi Board of Animal Health.
https://www.wcbi.com/ms-board-of-animal-health-confirms-bird-flu-case-in-noxubee-co/
6 minutes ago
NOXUBEE COUNTY, Miss. (WCBI) – The Mississippi Board of Animal Health has reported a case of the Bird Flu in Noxubee County.
According to the CDC, Bird Flu is a disease caused by avian influenza, a virus that usually spreads between birds.
-snip-
More details are expected to be released by the Mississippi Board of Animal Health.
https://www.wcbi.com/ms-board-of-animal-health-confirms-bird-flu-case-in-noxubee-co/
Last edited:
Commonground
Senior Moderator
FOR IMMEDIATE RELEASE: March 12, 2025
Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial broiler breeder chicken flock in Noxubee County, Mississippi has tested positive for highly pathogenic avian influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic
Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property
have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food
system. The MBAH is working closely with federal animal health officials in Mississippi on a joint incident response.
continued: https://www.hpai.ms.gov/wp-content/...za-Diagnosed-in-Mississippi-Poultry-Flock.pdf
Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial broiler breeder chicken flock in Noxubee County, Mississippi has tested positive for highly pathogenic avian influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic
Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property
have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food
system. The MBAH is working closely with federal animal health officials in Mississippi on a joint incident response.
continued: https://www.hpai.ms.gov/wp-content/...za-Diagnosed-in-Mississippi-Poultry-Flock.pdf
Michael Coston
Editor, Senior Moderator
Mississippi BAH: HPAI H7N9 Outbreak Reported In A Commercial Chicken Flock in Noxubee County
Mississippi BAH: HPAI H7N9 Outbreak Reported In A Commercial Chicken Flock in Noxubee County
#18,376
In March of 2017 (see graphic above) we followed a handful of outbreaks of a genetically distinct North American (NA) lineage avian H7N9 virus (both LPAI & HPAI) across four southern states; Tennessee, Alabama, Georgia, and Kentucky (see here, here, and here).
Despite sharing the same HA/NA designation as their more famous (and far more dangerous) Chinese counterpart - these North American viruses are considered to currently pose a relatively low threat to human health.
LPAI (Low path) H7 or H5 viruses - which are ubiquitous in wild birds - can sometimes make their way into a poultry flock, where they spread, evolve, and occasionally spontaneously mutate into highly pathogenic (HPAI) viruses.
Our understanding of how this happens is limited, and is based primarily on observations from dozens of documented incidents in poultry, but it prompted the OIE (now WOAH) to make LPAI H5 and H7 viruses reportable in 2006, and infected captive birds subject to immediate eradication (see Terrestrial Animal Code Article 10.4.1.).
Last week the Mississippi Board of Animal Health reported an outbreak of HPAI in a commercial chicken flock from Noxubee County, which borders Alabama.
A report was also published by WOAH which indicated the affected flock to be 47654 birds and identifies the subtype as HPAI H7N9.
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial broiler breeder chicken flock in Noxubee County, Mississippi has tested positive for highly pathogenic avian influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food system. The MBAH is working closely with federal animal health officials in Mississippi on a joint incident response.
The MBAH is actively working with the poultry industry to increase monitoring of flocks statewide. This finding is the third case of highly pathogenic avian influenza (HPAI) in commercial poultry in Mississippi since the spring of 2023. Since November 2024, HPAI has been detected in migratory waterfowl in multiple areas of Mississippi. The poultry industry was notified and put on high alert to increase biosecurity and surveillance for HPAI.
REPORTING: Hobby poultry owners are encouraged to practice good biosecurity and be aware of the signs of avian influenza and report illness and/or death in birds in the MBAH Online Reporting Form https://agnet.mdac.ms.gov/MBAHReportablePublic/birddeathlanding.
Information will be routed to a state or federal veterinarian in Mississippi for assessment. Dead birds should be double‐bagged and refrigerated for possible testing. Precautions should be taken when handling sick or dead birds including proper handwashing, using gloves, wearing masks, and sanitation of surfaces that come into contact with sick or dead birds to prevent the spread of avian influenza to people.
Avian influenza in birds can cause sudden death; lack of energy or appetite; decreased egg production; soft-shelled or misshapen eggs; swelling or purple discoloration of head, eyelids, comb, hocks; nasal discharge; coughing; sneezing; incoordination; and diarrhea. A resource for backyard bird health information is online at: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-diseaseinformation/avian/defend-the-flock-program/dtf-resources/dtf-resources.
As we've seen previously in the United States - and have recently seen in Australia - HPAI H7 outbreaks in poultry can be difficult to contain.
While H7 viruses are generally thought of as being less of a threat than H5 viruses - and primarily an agricultural concern - we've seen some notable exceptions.
But, as with all influenza viruses with zoonotic potential, that status quo can always change.
https://afludiary.blogspot.com/2025/03/mississippi-bah-hpai-h7n9-outbreak.html
Mississippi BAH: HPAI H7N9 Outbreak Reported In A Commercial Chicken Flock in Noxubee County
#18,376
In March of 2017 (see graphic above) we followed a handful of outbreaks of a genetically distinct North American (NA) lineage avian H7N9 virus (both LPAI & HPAI) across four southern states; Tennessee, Alabama, Georgia, and Kentucky (see here, here, and here).
Despite sharing the same HA/NA designation as their more famous (and far more dangerous) Chinese counterpart - these North American viruses are considered to currently pose a relatively low threat to human health.
LPAI (Low path) H7 or H5 viruses - which are ubiquitous in wild birds - can sometimes make their way into a poultry flock, where they spread, evolve, and occasionally spontaneously mutate into highly pathogenic (HPAI) viruses.
Our understanding of how this happens is limited, and is based primarily on observations from dozens of documented incidents in poultry, but it prompted the OIE (now WOAH) to make LPAI H5 and H7 viruses reportable in 2006, and infected captive birds subject to immediate eradication (see Terrestrial Animal Code Article 10.4.1.).
Last week the Mississippi Board of Animal Health reported an outbreak of HPAI in a commercial chicken flock from Noxubee County, which borders Alabama.
Remarkably, this report never specifies the subtype.
A report was also published by WOAH which indicated the affected flock to be 47654 birds and identifies the subtype as HPAI H7N9.
PRESS RELEASE
FOR IMMEDIATE RELEASE: March 12, 2025
Contact: Beth Adcock, Mississippi Board of Animal Health
769-798-3137
beth@mdac.ms.gov / msstatevet@mdac.ms.gov
FOR IMMEDIATE RELEASE: March 12, 2025
Contact: Beth Adcock, Mississippi Board of Animal Health
769-798-3137
beth@mdac.ms.gov / msstatevet@mdac.ms.gov
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S. Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial broiler breeder chicken flock in Noxubee County, Mississippi has tested positive for highly pathogenic avian influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food system. The MBAH is working closely with federal animal health officials in Mississippi on a joint incident response.
The MBAH is actively working with the poultry industry to increase monitoring of flocks statewide. This finding is the third case of highly pathogenic avian influenza (HPAI) in commercial poultry in Mississippi since the spring of 2023. Since November 2024, HPAI has been detected in migratory waterfowl in multiple areas of Mississippi. The poultry industry was notified and put on high alert to increase biosecurity and surveillance for HPAI.
REPORTING: Hobby poultry owners are encouraged to practice good biosecurity and be aware of the signs of avian influenza and report illness and/or death in birds in the MBAH Online Reporting Form https://agnet.mdac.ms.gov/MBAHReportablePublic/birddeathlanding.
Information will be routed to a state or federal veterinarian in Mississippi for assessment. Dead birds should be double‐bagged and refrigerated for possible testing. Precautions should be taken when handling sick or dead birds including proper handwashing, using gloves, wearing masks, and sanitation of surfaces that come into contact with sick or dead birds to prevent the spread of avian influenza to people.
Avian influenza in birds can cause sudden death; lack of energy or appetite; decreased egg production; soft-shelled or misshapen eggs; swelling or purple discoloration of head, eyelids, comb, hocks; nasal discharge; coughing; sneezing; incoordination; and diarrhea. A resource for backyard bird health information is online at: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-diseaseinformation/avian/defend-the-flock-program/dtf-resources/dtf-resources.
Biosecurity information and resources can be found by visiting: https://www.mbah.ms.gov/biosecurity/.
UPDATES and INFORMATION: Updates about ongoing avian influenza activities in Mississippi, along with critical disease‐related information, will be posted online at: https://www.hpai.ms.gov/.
UPDATES and INFORMATION: Updates about ongoing avian influenza activities in Mississippi, along with critical disease‐related information, will be posted online at: https://www.hpai.ms.gov/.
As we've seen previously in the United States - and have recently seen in Australia - HPAI H7 outbreaks in poultry can be difficult to contain.
While H7 viruses are generally thought of as being less of a threat than H5 viruses - and primarily an agricultural concern - we've seen some notable exceptions.
- In 2003, the Netherlands saw an outbreak of H7N7 that resulted in the loss of 30 million birds across 1,000 farms, and saw scores of mild human infections and the death of a veterinarian (see Eurosurveillance Human-to-human transmission of avian influenza A/H7N7, The Netherlands, 2003).
- Another analysis, performed by the RIVM (Ministry of Health) found the spread of the virus to be much greater than originally reported, citing as many as 1,000 human infections (see Executive summary Avian Flu Epidemic 2003: Public health consequences),
- Smaller H7 outbreaks, including the 2004 H7N3 outbreak in British Columbia, a small number of human infections in Wales in 2007, and 3 mild cases in Italy in 2013 (see ECDC : Human Infection By Avian H7N7 In Italy) were also reported.
- But the 5-year epidemic of H7N9 in China (2013-2018) - which hospitalized more than 1,500 people, killing roughly 40% of them - demonstrate just how formidable an H7 virus can be.
For now, the HPAI H7N9 virus reported in Mississippi show no signs of posing any kind of serious public health threat.
But, as with all influenza viruses with zoonotic potential, that status quo can always change.
https://afludiary.blogspot.com/2025/03/mississippi-bah-hpai-h7n9-outbreak.html
Pathfinder
Editor, Senior Moderator
Commonground
Senior Moderator
STATE OF MISSISSIPPI BOARD OF ANIMAL HEALTH
JAMES WATSON STATE VETERINARIAN
PRESS RELEASE
FOR IMMEDIATE RELEASE: March 17, 2025
Contact: Beth Adcock, Mississippi Board of Animal Health 769-798-3137 beth@mdac.ms.govmsstatevet@mdac.ms.gov
H7N9 Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S.
Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial
broiler breeder chicken flock in Noxubee County tested positive for H7N9 highly pathogenic avian
influenza (HPAI).
The USDA Animal and Plant Health Inspection Service (APHIS) has previously documented H7N9 low
pathogenicity avian influenza (LPAI) in U.S. wild bird surveillance this year and in previous years, but
this is the first HPAI H7 case in commercial poultry in the United States since 2017.
This H7N9 virus is a fully North American (AM) virus of wild bird-origin and is unrelated to the
Eurasian H5N1 clade 2.3.4.4b virus currently circulating in the United States. Some AM H7 LPAI viruses
detected as part of APHIS’ wild bird surveillance are closely related to this HPAI virus, indicating a
recent spillover of wild bird-origin LPAI virus.
The flock was experiencing high mortality, and samples tested at the Mississippi Veterinary Research &
Diagnostic Laboratory, a member of the National Animal Health Laboratory Network, were presumptive
positive for HPAI then confirmed as H7N9 at the APHIS National Veterinary Services Laboratories
(NVSL).
The state veterinarian quarantined the premises, and the MBAH coordinated a joint incident response
with federal animal health officials in Mississippi. The birds on the property were depopulated to prevent
the spread of the disease. Birds did not enter the food system.
The MBAH is actively working with federal partners and the poultry industry to increase monitoring of
flocks statewide.
This finding is the third case of highly pathogenic avian influenza (HPAI) in commercial poultry in
Mississippi since the spring of 2023. Since November 2024, HPAI has been detected in migratory
waterfowl in multiple areas of Mississippi.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and
cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public
health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and
cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food
safety precaution.
Biosecurity remains the most effective tool against the introduction and spread of avian influenza.
Visit APHIS’ Defend the Flock Resource Center for additional materials about biosecurity, including
videos, checklists, and a toolkit. Biosecurity information can also be found by visiting:
https://www.mbah.ms.gov/biosecurity/.
Hobby poultry owners are encouraged to practice good biosecurity and be aware of the signs of avian
influenza and report illness and/or death in birds in the MBAH Online Reporting Form
https://agnet.mdac.ms.gov/MBAHReportablePublic/birddeathlanding.
Updates about ongoing avian influenza activities in Mississippi, along with critical disease‐related
information, will be posted online at: https://www.hpai.ms.gov/.
https://www.hpai.ms.gov/wp-content/...H7N9-Diagnosed-in-Poultry-Flock-3_17_2025.pdf
JAMES WATSON STATE VETERINARIAN
PRESS RELEASE
FOR IMMEDIATE RELEASE: March 17, 2025
Contact: Beth Adcock, Mississippi Board of Animal Health 769-798-3137 beth@mdac.ms.govmsstatevet@mdac.ms.gov
H7N9 Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S.
Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial
broiler breeder chicken flock in Noxubee County tested positive for H7N9 highly pathogenic avian
influenza (HPAI).
The USDA Animal and Plant Health Inspection Service (APHIS) has previously documented H7N9 low
pathogenicity avian influenza (LPAI) in U.S. wild bird surveillance this year and in previous years, but
this is the first HPAI H7 case in commercial poultry in the United States since 2017.
This H7N9 virus is a fully North American (AM) virus of wild bird-origin and is unrelated to the
Eurasian H5N1 clade 2.3.4.4b virus currently circulating in the United States. Some AM H7 LPAI viruses
detected as part of APHIS’ wild bird surveillance are closely related to this HPAI virus, indicating a
recent spillover of wild bird-origin LPAI virus.
The flock was experiencing high mortality, and samples tested at the Mississippi Veterinary Research &
Diagnostic Laboratory, a member of the National Animal Health Laboratory Network, were presumptive
positive for HPAI then confirmed as H7N9 at the APHIS National Veterinary Services Laboratories
(NVSL).
The state veterinarian quarantined the premises, and the MBAH coordinated a joint incident response
with federal animal health officials in Mississippi. The birds on the property were depopulated to prevent
the spread of the disease. Birds did not enter the food system.
The MBAH is actively working with federal partners and the poultry industry to increase monitoring of
flocks statewide.
This finding is the third case of highly pathogenic avian influenza (HPAI) in commercial poultry in
Mississippi since the spring of 2023. Since November 2024, HPAI has been detected in migratory
waterfowl in multiple areas of Mississippi.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and
cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public
health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and
cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food
safety precaution.
Biosecurity remains the most effective tool against the introduction and spread of avian influenza.
Visit APHIS’ Defend the Flock Resource Center for additional materials about biosecurity, including
videos, checklists, and a toolkit. Biosecurity information can also be found by visiting:
https://www.mbah.ms.gov/biosecurity/.
Hobby poultry owners are encouraged to practice good biosecurity and be aware of the signs of avian
influenza and report illness and/or death in birds in the MBAH Online Reporting Form
https://agnet.mdac.ms.gov/MBAHReportablePublic/birddeathlanding.
Updates about ongoing avian influenza activities in Mississippi, along with critical disease‐related
information, will be posted online at: https://www.hpai.ms.gov/.
https://www.hpai.ms.gov/wp-content/...H7N9-Diagnosed-in-Poultry-Flock-3_17_2025.pdf
Commonground
Senior Moderator
[On March. 12, Noxubee County also reported H5N1 in poultry. Both were Broiler Breeder poultry farms. We know that for the H7N9 outbreak "The outbreak began on March 8 when clinical signs were noticed, including increased deaths. Depopulation of 47,654 birds at the facility was completed on March 13." (Cidrap), I was not able to obtain a date of onset, or a date of completing of the culling for the March 12, H5N1 outbreak]]
https://flutrackers.com/forum/forum...lu-in-poultry-2024-2025?p=1009654#post1009654
https://flutrackers.com/forum/forum...lu-in-poultry-2024-2025?p=1009654#post1009654
Pathfinder
Editor, Senior Moderator
APHIS Confirms H7N9 Highly Pathogenic Avian Influenza (HPAI) in a U.S. Flock
On March 12, APHIS confirmed the presence of highly pathogenic avian influenza (HPAI) H7N9 in a broiler chicken breeder flock in Mississippi. APHIS has previously documented H7 low pathogenicity avian influenza (LPAI) in U.S. wild bird surveillance this year and in previous years, but this is the first HPAI H7 case in commercial poultry in the United States since 2017.
This H7N9 virus is a fully North American (AM) virus of wild bird-origin and is unrelated to the Eurasian H5N1 clade 2.3.4.4b virus currently circulating in the United States. Some AM H7 LPAI viruses detected as part of APHIS’ wild bird surveillance are closely related to this HPAI virus, indicating a recent spillover of wild bird-origin LPAI virus. Spillovers of avian influenza from wild bird sources can occur due to breaches in biosecurity. APHIS closely monitors these subtypes because H5 and H7 LPAI viruses in poultry species such as chickens and turkeys can mutate into HPAI
The flock of roughly 46,000 birds was experiencing high mortality, and samples tested at the Mississippi Veterinary Research & Diagnostic Laboratory, a member of the National Animal Health Laboratory Network, were presumptive positive for HPAI then confirmed at APHIS’ National Veterinary Services Laboratories (NVSL).
As part of existing avian influenza response plans, Federal and State partners are working jointly on additional surveillance and testing in areas around the affected flock. USDA will report these findings to the World Organization for Animal Health (WOAH) as well as international trading partners. USDA also continues to communicate with trading partners to encourage adherence to WOAH standards and minimize trade impacts.
According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with these avian influenza detections in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
Biosecurity remains the most effective tool against the introduction and spread of avian influenza. Visit APHIS’ Defend the Flock Resource Center for additional materials about biosecurity, including videos, checklists, and a toolkit.
https://www.aphis.usda.gov/news/pro...ghly-pathogenic-avian-influenza-hpai-us-flock
On March 12, APHIS confirmed the presence of highly pathogenic avian influenza (HPAI) H7N9 in a broiler chicken breeder flock in Mississippi. APHIS has previously documented H7 low pathogenicity avian influenza (LPAI) in U.S. wild bird surveillance this year and in previous years, but this is the first HPAI H7 case in commercial poultry in the United States since 2017.
This H7N9 virus is a fully North American (AM) virus of wild bird-origin and is unrelated to the Eurasian H5N1 clade 2.3.4.4b virus currently circulating in the United States. Some AM H7 LPAI viruses detected as part of APHIS’ wild bird surveillance are closely related to this HPAI virus, indicating a recent spillover of wild bird-origin LPAI virus. Spillovers of avian influenza from wild bird sources can occur due to breaches in biosecurity. APHIS closely monitors these subtypes because H5 and H7 LPAI viruses in poultry species such as chickens and turkeys can mutate into HPAI
The flock of roughly 46,000 birds was experiencing high mortality, and samples tested at the Mississippi Veterinary Research & Diagnostic Laboratory, a member of the National Animal Health Laboratory Network, were presumptive positive for HPAI then confirmed at APHIS’ National Veterinary Services Laboratories (NVSL).
As part of existing avian influenza response plans, Federal and State partners are working jointly on additional surveillance and testing in areas around the affected flock. USDA will report these findings to the World Organization for Animal Health (WOAH) as well as international trading partners. USDA also continues to communicate with trading partners to encourage adherence to WOAH standards and minimize trade impacts.
According to the U.S. Centers for Disease Control and Prevention (CDC), the public health risk associated with these avian influenza detections in birds remains low. As a reminder, the proper handling and cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food safety precaution.
Biosecurity remains the most effective tool against the introduction and spread of avian influenza. Visit APHIS’ Defend the Flock Resource Center for additional materials about biosecurity, including videos, checklists, and a toolkit.
https://www.aphis.usda.gov/news/pro...ghly-pathogenic-avian-influenza-hpai-us-flock
Pathfinder
Editor, Senior Moderator
Amite County, Mississippi
/https://en.wikipedia.org/wiki/Amite_County,_Mississippi
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https://www.aphis.usda.gov/livestoc...za/hpai-detections/commercial-backyard-flocks
Last edited:
Pathfinder
Editor, Senior Moderator
Related to the post above:
Amite-County-HPAI-2-4-2026
by Jason Price | Feb 4, 2026
Amite-County-HPAI-2-4-2026
Excerpt:
Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S.
Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial
broiler chicken flock in Amite County, Mississippi has tested positive for highly pathogenic H5 avian
influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic
Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS
National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and
cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public
health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and
cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food
safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property
have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food
system. The MBAH is working closely with federal animal health officials in Mississippi on a joint
incident response.
The MBAH is actively working with the poultry industry to increase monitoring of flocks statewide. This
finding is the first case of highly pathogenic avian influenza (HPAI) in commercial poultry in Mississippi
since the spring of 2025. The poultry industry was notified and put on high alert to increase biosecurity
and surveillance for HPAI.
...
https://www.mbah.ms.gov/wp-content/uploads/Amite-County-HPAI-2-4-2026.pdf
...
Amite-County-HPAI-2-4-2026
by Jason Price | Feb 4, 2026
Amite-County-HPAI-2-4-2026
Excerpt:
Highly Pathogenic Avian Influenza Diagnosed in Mississippi Poultry Flock
JACKSON, Miss. – The Mississippi Board of Animal Health (MBAH) has been notified by the U.S.
Department of Agriculture’s National Veterinary Services Laboratory that poultry from a commercial
broiler chicken flock in Amite County, Mississippi has tested positive for highly pathogenic H5 avian
influenza. Samples from the flock were tested at the Mississippi Veterinary Research & Diagnostic
Laboratory, part of the National Animal Health Laboratory Network, and confirmed at the APHIS
National Veterinary Services Laboratories in Ames, Iowa.
Avian influenza does not present a food safety risk; poultry and eggs are safe to eat when handled and
cooked properly. According to the U.S. Centers for Disease Control and Prevention (CDC), the public
health risk associated with avian influenza in birds remains low. As a reminder, the proper handling and
cooking of all poultry and eggs to an internal temperature of 165 ˚F is recommended as a general food
safety precaution.
SITUATION: The State Veterinarian has quarantined the affected premises, and birds on the property
have been depopulated to prevent the spread of the disease. Birds from the flock have not entered the food
system. The MBAH is working closely with federal animal health officials in Mississippi on a joint
incident response.
The MBAH is actively working with the poultry industry to increase monitoring of flocks statewide. This
finding is the first case of highly pathogenic avian influenza (HPAI) in commercial poultry in Mississippi
since the spring of 2025. The poultry industry was notified and put on high alert to increase biosecurity
and surveillance for HPAI.
...
https://www.mbah.ms.gov/wp-content/uploads/Amite-County-HPAI-2-4-2026.pdf
...