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US - Outbreak of highly pathogenic avian influenza H5N1 in wild harbor seals found dead in Jefferson County, Washington (WOAH, September 7, 2023)

Pathfinder

Pathfinder

Editor, Senior Moderator
United States of America - Influenza A viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-) - Follow up report 36

GENERAL INFORMATION
COUNTRY/TERRITORY OR ZONE
ZONE

ANIMAL TYPE
TERRESTRIAL

DISEASE CATEGORY
Listed disease

EVENT ID
4451

DISEASE
Influenza A viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-)

CAUSAL AGENT
Highly pathogenic avian influenza virus

GENOTYPE / SEROTYPE / SUBTYPE
H5N1

START DATE
2022/03/30

REASON FOR NOTIFICATION
Unusual host species

DATE OF LAST OCCURRENCE
-

CONFIRMATION DATE
2022/05/05

EVENT STATUS
On-going

END DATE
-

SELF-DECLARATION
NO

REPORT INFORMATION
REPORT NUMBER
Follow-up report 36

REPORT ID
FUR_162659

REPORT REFERENCE
-

REPORT DATE
2023/09/07

REPORT STATUS
Validated

NO EVOLUTION REPORT
-

EPIDEMIOLOGY
SOURCE OF EVENT OR ORIGIN OF INFECTION
Contact with wild species
Unknown or inconclusive

EPIDEMIOLOGICAL COMMENTS
Washington (WA)- Highly pathogenic avian influenza (HPAI) H5N1 Eurasian lineage goose/Guangdong clade 2.3.4.4b was confirmed in wild harbor seals (Phoca vitulina).

...

NEW OUTBREAKS

OB_124669 - JEFFERSON COUNTY

OUTBREAK REFERENCE
-

START DATE
2023/08/18

END DATE
-

DETAILED CHARACTERISATION
-

FIRST ADMINISTRATIVE DIVISION
Washington

SECOND ADMINISTRATIVE DIVISION
Jefferson

THIRD ADMINISTRATIVE DIVISION
-

EPIDEMIOLOGICAL UNIT
Not applicable

LOCATION
Jefferson County

Latitude, Longitude
48.112 , -122.768

(Approximate location)
OUTBREAKS IN CLUSTER
-

MEASURING UNIT
Animal

AFFECTED POPULATION DESCRIPTION
Wild harbor seals (Phoca vitulina). Samples were collected from animals that were found dead.

SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated
Harbor Seal (WILD)
Wild
NEW - 3 3 - - -
TOTAL - 3 3 - - -

...
https://wahis.woah.org/#/in-review/4451​
 
United States of America - Influenza A viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-) - Follow up report 37

GENERAL INFORMATION
COUNTRY/TERRITORY OR ZONE
ZONE

ANIMAL TYPE
TERRESTRIAL

DISEASE CATEGORY
Listed disease

EVENT ID
4451

DISEASE
Influenza A viruses of high pathogenicity (Inf. with) (non-poultry including wild birds) (2017-)

CAUSAL AGENT
Highly pathogenic avian influenza virus

GENOTYPE / SEROTYPE / SUBTYPE
H5N1

START DATE
2022/03/30

REASON FOR NOTIFICATION
Unusual host species

DATE OF LAST OCCURRENCE
-

CONFIRMATION DATE
2022/05/05

EVENT STATUS
On-going

END DATE
-

SELF-DECLARATION
NO

REPORT INFORMATION
REPORT NUMBER
Follow-up report 37

REPORT ID
FUR_162832

REPORT REFERENCE
-

REPORT DATE
2023/09/21

REPORT STATUS
Validated

NO EVOLUTION REPORT
-

EPIDEMIOLOGY
SOURCE OF EVENT OR ORIGIN OF INFECTION
Contact with wild species
Unknown or inconclusive

EPIDEMIOLOGICAL COMMENTS
Washington (WA)- Highly pathogenic avian influenza (HPAI) H5N1 Eurasian lineage goose/Guangdong clade 2.3.4.4b was confirmed in two additional wild harbor seals (Phoca vitulina).

QUANTITATIVE DATA SUMMARY
MEASURING UNIT
Animal

...

UPDATED OUTBREAKS

OB_124669 - JEFFERSON COUNTY
OUTBREAK REFERENCE
-

START DATE
2023/08/18

END DATE
-

DETAILED CHARACTERISATION
-

FIRST ADMINISTRATIVE DIVISION
Washington

SECOND ADMINISTRATIVE DIVISION
Jefferson

THIRD ADMINISTRATIVE DIVISION
-

EPIDEMIOLOGICAL UNIT
Not applicable

LOCATION
Jefferson County

Latitude, Longitude
48.112 , -122.768

(Approximate location)
OUTBREAKS IN CLUSTER
-

MEASURING UNIT
Animal

AFFECTED POPULATION DESCRIPTION
Wild harbour seals (Phoca vitulina).

SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated
Harbor Seal (WILD)
Wild
NEW - 2 2 - - -
TOTAL - 5 5 - - -

...
https://wahis.woah.org/#/in-review/4451​
 
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