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Armed Forces Health Surveillance (AFHSC)--2009-2010 Flu Season

M

Missouriwatcher

Editor, Senior Moderator
"Synopsis (Week 48):
Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates increased from last week. The percent of all outpatient visits due to ILI for service members (SMs) and beneficiaries remained relatively similar to last week and were just above baseline percents and were similar to previous season percents. There have been 1041 reportable medical event (RME) influenza cases (36.8% had been vaccinated against seasonal influenza and none were vaccinated against novel H1N1) among SMs since week 40 (compared to 17 cases last season). An additional 1662 cases in total have been reported among other beneficiaries...RME date is also reported. Counts for all regions and services are presented."
http://www.afhsc.mil/Documents/Flu_Reports/Flu Surveillance Report_2009_Week48.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 49

Re: Armed Forces Health Surveillance (AFHSC)--week 49

"Synopsis (Week 49):
Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates decreased slightly from last week except for unvaccinated P&I rates in EUCOM and PACOM which increased.
The percent of all outpatient visits due to ILI for service members (SMs) and beneficiaries for the US and PACOM remained stable from last week and were just above the baseline and matched previous season percents. EUCOM percents decreased below baseline and previous season percents.
There have been 1054 reportable medical event (RME) influenza cases (39.7% had been vaccinated against seasonal influenza and none were vaccinated against novel H1N1) among SMs since week 40 (compared to 21 cases last season). An additional 1712 cases in total have been reported among other
beneficiaries."
http://www.afhsc.mil/Documents/Flu_Reports/Flu Surveillance Report_2009_Week49.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 50

Re: Armed Forces Health Surveillance (AFHSC)--week 50

"Synopsis (Week 50):
Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates decreased from last week except for the unvaccinated P&I rate in the US which slightly increased.

The percent of all outpatient visits due to ILI for service members (SMs) and beneficiaries for EUCOM and PACOM remained stable or slightly increased from last week. US percents for SMs decreased below baseline to match previous season percents.

The percent of all outpatient visits due to P&I for SMs and beneficiaries remained similar to last week for all groups except for PACOM beneficiaries. PACOM beneficiary percents decreased to reach baseline percents.

There have been 1062 reportable medical event (RME) influenza cases..."
http://www.afhsc.mil/fluReports
 
Last edited:
Re: Armed Forces Health Surveillance (AFHSC)--week 50

Re: Armed Forces Health Surveillance (AFHSC)--week 50

Dec 22:
DOD: One additional influenza-associated death was reported; Patient was an 11 year-old Navy family member who died 28 Nov 2009

Air Force: Molecular analysis of the predominant circulating influenza strain (pH1N1) shows a close match to the current pH1N1 vaccine
• A total of 14 (9 flu B, 5 H3N2) seasonal influenza strains have been captured in the sentinel network since 01 Oct 2009

Naval: Six of eight basic military training centers are experiencing moderate co-circulation of pH1N1 with predominance of adenovirus

Global Network:
"NAMRU-3: Ministry of Health officials in Egypt announced an additional case of H5N1 out of the El Tanta District in Egypt
USAMRU-K: Surveillance efforts in East Africa are beginning to see a predominance of influenza B although overall activity from flu continues to trend downward
DoD/DOS: Surveillance among US Embassies around the world show a continued predominance of pH1N1 with a notable recent increase in seasonal strains out of Central America and the Caribbean
AFRIMS: Influenza surveillance throughout South and Southeast Asia continues to show a predominance of pH1N1 with continued increases in seasonal A/H3N2; sequence analysis of these H3N2 viruses suggest a close alignment with the Southern Hemisphere H3N2 vaccine strain but lesser so for the current Northern Hemisphere H3N2 vaccine strain."

Mortality Total: 10
http://www.afhsc.mil/viewFlu?file=D...nfluenza Surveillance Summary-22 December.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 52

Re: Armed Forces Health Surveillance (AFHSC)--week 52

Week 52:

"? Influenza-like illness (ILI) and lab-based influenza activity across the DoD remains unchanged over the past two weeks
? Pandemic Influenza A/H1N1 (pH1N1) remains the predominant influenza strain at US military treatment facilities
? No additional influenza-associated deaths were reported since the last AFHSC summary (22 Dec 09)
? ILI rates showed a slight increase over the past two weeks but are consistent with previous years rates during the holiday season
? No lab-confirmed seasonal influenza (seasonal H1N1, H3N2 or influenza B) were detected over the past two weeks
? Molecular sequencing of pH1N1 isolates continues to show close alignment with the existing pandemic vaccine strain
? Febrile respiratory illness (FRI) rates are substantially elevated at Lackland AFB (TX); primarily due to adenovirus type 4
? Influenza is currently circulating mildly at only two of eight basic military trainee installations under surveillance

NAMRU-3: Clear predominance (80%) of pH1N1 among N. Africa surveillance sites with a slight increase of seasonal flu strains
AFRIMS: Increased ILI with a recent and dramatic shift to pH1N1 predominance (99%) among surveillance sites in Nepal. Other areas throughout SE Asia are seeing mild ILI and decreases in lab-confirmed influenza
EUROPE: Thirty percent (22 of 73) of respiratory samples received last week at LRMC were positive for rhino/enterovirus
NMRCD: A steady decline in ILI and lab-confirmed influenza from surveillance efforts in South America"
http://www.afhsc.mil/viewFlu?file=D...Influenza Surveillance Summary-05 January.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 1

Re: Armed Forces Health Surveillance (AFHSC)--week 1

Week 1:
? Influenza-like illness (ILI) has begun to increase across the military health system (MHS) but is consistent with previous years
? Pandemic influenza A/H1N1 (pH1N1) remains the predominant influenza strain at US military treatment facilities
? One additional influenza-associated death was reported this past week; a 37 year-old Army spouse from Fort Campbell, Kentucky
http://www.afhsc.mil/viewFlu?file=D...Influenza Surveillance Summary-12 January.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 2

Re: Armed Forces Health Surveillance (AFHSC)--week 2

Week 2:

Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates decreased compared to last week and were comparable to the rates over the holidays.

Continued predominance of pandemic H1N1 (pH1N1) with close alignment to the current monovalent vaccine strain.

Global Surveillance Network:
AFRIMS:Continued predominance of pH1N1 with an overall decrease in ILI activity throughout the SE Asia surveillance network
NAMRU-3: Continued predominance of pH1N1 with a decrease in ILI activity among hospital-based surveillance sites
USAMRU-K: A continued and dramatic downward trend for surveillance sites in East Africa
http://www.afhsc.mil/fluReports?clear
 
Re: Armed Forces Health Surveillance (AFHSC)--week 4

Re: Armed Forces Health Surveillance (AFHSC)--week 4

Week 4:
# Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates continued to decrease or remain stable compared to last week. (Fig. 1)
# The percent of all outpatient visits due to ILI for service members (SMs) and beneficiaries increased slightly from last week for all regions, but remained below previous season percents and close to baseline percents. (Fig. 2)
# The percent of all outpatient visits due to P&I increased slightly for EUCOM beneficiaries and PACOM, but remained similar to baseline and previous season percents. US and EUCOM SM percents remained stable from last week and continued to be at or below baseline and previous season percents

United States Air Force School of Aerospace Medicine
? DoD sentinel surveillance sites continue to see a predominance of pH1N1
? No USAF bases are currently experiencing elevated ILI rates

Naval Health Research Center
? Febrile respiratory illness (FRI) rates at Lackland AFB and CGCT Cape May are moderately elevated and due to adenovirus
? There have been no influenza cases at any of the eight training centers this past week

NAMRU-3: The Ministry of Health in Egypt has announced four new human cases of H5N1 this month; pH1N1 continues to predominate in many parts of Africa
AFRIMS: Molecular sequencing of pH1N1 viruses from throughout SE Asia show close alignment with the current monovalent pandemic vaccine strain
http://www.afhsc.mil/fluReports
 
Re: Armed Forces Health Surveillance (AFHSC)--week 6

Re: Armed Forces Health Surveillance (AFHSC)--week 6

Week 6:

DOD
Influenza-like illness (ILI) has slightly increased for the second consecutive week across the military health system (MHS)
Circulating pandemic H1N1 (pH1N1) viruses remain closely aligned with the current monovalent vaccine strains
No additional influenza-associated deaths have been reported since 12 January 2010

USAF School
ILI visits at Air Force installations have increased for the third consecutive week but remain below the six year average
Sequence analysis of pH1N1 viruses continues to show a close alignment with the current monovalent pandemic vaccine strains

Naval Health
Febrile respiratory illness (FRI) rates are substantially elevated at MCRD-SD due to co-circulation of adenovirus types 4 and 14
Sequenced pH1N1 viruses from Japan and Guam are closely aligned with the current pandemic vaccine strains

AFHSC
Both ILI and pneumonia & influenza (P&I) have increased slightly across the MHS
The percent of ILI clinic visits continues to track at or below levels experienced in the two previous years
There was only one new influenza or pneumonia-associated hospitalization reported this week

Global
NAMRU-3: The Ministry of Health in Egypt has announced five new human cases of H5N1 over the past two weeks Molecular sequencing of pH1N1 viruses from deployed US service members shows close alignment with vaccine strains and show no signs of resistance to oseltamivir
AFRIMS: Predominance of pH1N1 continues throughout South and Southeast Asia with a moderate increase in influenza B
USAMRU-K: Moderate influenza activity in Central and East Africa with pH1N1 continuing as the predominant strain
http://www.afhsc.mil/viewFlu?file=D...nfluenza_Surveillance_Summary-16_February.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 7

Re: Armed Forces Health Surveillance (AFHSC)--week 7

Week 7:

DoD
Influenza-like illness (ILI) has slightly increased but remains below seasonal levels across the military health system (MHS)

USAF Aerospace Medicine
Lab-confirmed pH1N1 cases have decreased at sentinel sites, while ILI increased slightly during this last week
A co-infection of pH1N1 and adenovirus was recently reported from Randolph AFB in Texas
Circulating pH1N1 viruses remain closely aligned with the monovalent pandemic vaccine strain

Naval Health Research Center
Febrile respiratory illness rates remain elevated at MRCD-SD (adenovirus subtype 4 & 14) and Lackland AFB (Adenovirus 4)

AFHSC
Both ILI and pneumonia and influenza (P&I) among service members continue to increase toward 2009 baseline
The percent of ILI clinic visits continues to track at or below levels experienced in the previous two years

Global Surveillance Network
NAMRU-3: Two more H5N1 cases were reported from Egypt this past week totaling nine since 6 January 2010. Of the 99 H5N1 cases diagnosed in Egypt, 30 have died (CFR=30.3%)
AFRIMS: Throughout South and Southeast Asia, pH1N1 predominates with a decreasing trend and the percentage of influenza B cases has increased over the last 3 weeks
http://www.afhsc.mil/viewFlu?file=D...nfluenza_Surveillance_Summary-23_February.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 8

Re: Armed Forces Health Surveillance (AFHSC)--week 8

Week 8:

DoD Summary:
Influenza-like illness (ILI) continues to occur below seasonal levels across the military health system (MHS)
No additional influenza-associated deaths have been reported since 12 January 2010

Naval Health Research Center:
Febrile Respiratory Illness (FRI) rates are elevated at MCRD San Diego and CGTC Cape May recruit training centers
Recent A/H1N1 training center cases are among only the unvaccinated (have not received vaccine or <14 days post-vaccination)

AFHSC:
Synopsis (Week 08):
Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates have remained relatively
stable over the past several weeks.
The percent of all outpatient visits due to ILI decreased this week for all regions. All percents were at or
below previous season percents. Only US and EUCOM beneficiaries had percents higher than baseline
this week.
The percent of all outpatient visits due to P&I decreased or remained similar to last week. All region
percents were at or below baseline and previous season percents, with the exception of EUCOM
beneficiary percents which were slightly above baseline.
There have been 1197 reportable medical event (RME) influenza cases (43.3% had been vaccinated
against seasonal influenza and 17 were vaccinated against novel H1N1) among SMs since week 40
(compared to 376 cases last season). An additional 1882 cases have been reported among other
beneficiaries.
http://www.afhsc.mil/viewFlu?file=D...y_Influenza_Surveillance_Summary-02_March.pdf
http://www.afhsc.mil/viewFlu?file=AFHSC/2009-2010/Flu Surveillance Report_2010_Week08.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 9

Re: Armed Forces Health Surveillance (AFHSC)--week 9

Week 9:

AFHSC
Influenza-like illness (ILI) and pneumonia and influenza (P&I) incidence rates continued to remained relatively stable.
The percent of all outpatient visits due to ILI remained stable or decreased for all regions except PACOM beneficiary percents, which increased slightly. All percents were at or below previous season percents. Only US and EUCOM beneficiary percents continued to be higher than baseline.
The percent of all outpatient visits due to P&I have remained relatively stable over the past several weeks. All region percents were at or below baseline and previous season percents.
There have been 1201 reportable medical event (RME) influenza cases (43.3% had been vaccinated against seasonal influenza and 20 were vaccinated against novel H1N1) among SMs since week 40 (compared to 493 cases last season). An additional 1901 cases have been reported among other beneficiaries.

DoD Summary
Influenza-like illness (ILI) rates have remained stable or decreased for the past few weeks across the military health system (MHS)
Lab-confirmed influenza continues to decrease across the AFHSC-GEIS Global Network
Pandemic H1N1 (pH1N1) remains the predominant strain across the network with the exception of Central and East Africa

United States Air Force School of Aerospace Medicine
Continued decreases in lab submissions and lab-confirmed influenza seen across the global sentinel network
Increasing trend in ILI at MTFs remains well below historic averages for this time of year
Molecular analysis of pH1N1 viruses continues to show close alignment with the monovalent vaccine strain

Naval Health Research Center
Moderately elevated febrile respiratory illness rates at MCRD-San Diego and Lackland AFB; both due to adenovirus activity
Overall influenza activity at recruit training centers remains consistently low

Global Surveillance Network
NAMRU-3: The Egyptian Ministry of Health announced five new cases of human H5N1 this past week
USAMRU-K: Disease activity throughout Central and East Africa continues in a downward trend but has recently shifted to
influenza B predominance
AFRIMS: Surveillance throughout SE Asia continues to show a predominance of pH1N1
http://www.afhsc.mil/fluReports
 
Re: Armed Forces Health Surveillance (AFHSC)--week 10

Re: Armed Forces Health Surveillance (AFHSC)--week 10

Week 10:

DoD Summary
Clinic visits for influenza-like illness (ILI) have remained relatively stable over the past few weeks
Molecular characterization of Pandemic H1N1 (pH1N1) shows continued alignment with the current monovalent pandemic vaccine
No new influenza-associated hospitalizations or deaths were reported this past week

United States Air Force School of Aerospace Medicine
Lab-confirmed influenza remains at a remarkably low level when compared to previous years
Molecular analysis of pH1N1 viruses from the global sentinel network shows close alignment with the monovalent vaccine

Naval Health Research Center
Elevated febrile respiratory illness rates at Lackland AFB and USCG Cape May; both due to adenovirus activity
Cases of pH1N1 were reported from three basic training centers this week; Fort Jackson, NRTC Great Lakes and Lackland AFB

AFHSC
Both ILI and pneumonia and influenza (P&I) have remained relatively stable over the past few weeks
The percent of ILI clinic visits continues to track at or below levels experienced in the two previous years
There were no new influenza or pneumonia-associated hospitalization reported this week
http://www.afhsc.mil/viewFlu?file=D...y_Influenza_Surveillance_Summary-16_March.pdf
 
Re: Armed Forces Health Surveillance (AFHSC)--week 11

Re: Armed Forces Health Surveillance (AFHSC)--week 11

Week 11:

DoD Summary
Clinic visits for influenza-like illness (ILI) have remained stable
Laboratory-confirmed influenza continues to drop across the military health system (MHS)
No new influenza-associated hospitalizations or deaths were reported this past week

United States Air Force School of Aerospace Medicine
There have been no seasonal influenza positive cases from the sentinel network since 9 December 2009
Clinic visits for ILI remain low at all 75 Air Force medical treatment facilities
http://airforcemedicine.afms.mil/idc/groups/public/documents/afms/ctb_134329.pdf

Naval Health Research Center
Febrile respiratory illness rates are elevated at NRTC Great Lakes and Ft. Leonard Wood; both due to adenovirus circulation
Lab-confirmed influenza is currently not circulating among recruits at any of the eight surveillance sites
http://www.med.navy.mil/sites/nhrc/geis/Documents/FRIUpdate.pdf

AFHSC
Both ILI and pneumonia and influenza (P&I) have remained stable over the past few weeks
The percent of ILI clinic visits continues to track at or below levels experienced in the two previous years
There were no new influenza or pneumonia-associated hospitalization reported this week
http://www.afhsc.mil/viewFlu?file=AFHSC/2009-2010/Flu Surveillance Report_2010_Week03.pdf

NAMRU-3: Ministry of Health officials in Egypt announces another human H5N1 case this past week (N=107)
USAMRU-K: Although activity remains low, influenza B and pH1N1 continue to co-circulate in Central and East Africa
http://www.afhsc.mil/fluReports
 
Re: Armed Forces Health Surveillance (AFHSC)--week 12

Re: Armed Forces Health Surveillance (AFHSC)--week 12

Week 12:

DoD Summary
Clinic visits for influenza-like illness (ILI) have remained stable across the military health system (MHS)
Molecular analysis of recent pandemic H1N1 (pH1N1) cases continues to show close alignment with the monovalent vaccine
DoD influenza vaccine coverage for active duty troops is at 96% for seasonal influenza and 90% for pandemic H1N1

AFHSC
Both ILI and pneumonia and influenza (P&I) continue to trend downward across the MHS
The percent of ILI clinic visits continues to track at or below levels experienced in the two previous years
There were no new influenza or pneumonia-associated hospitalization reported this week

Naval Health Research Center
Febrile respiratory illness rates are moderately elevated at NRTC Great Lakes; primarily due to adenovirus type 4
Six new cases of pH1N1 were identified this past week: NRTC Great Lakes (3) and Fort Jackson (3)

United States Air Force School of Aerospace Medicine
Laboratory confirmed influenza continues to decrease across the sentinel surveillance network
US Coast Guard ILI rates have increased and are slightly higher than the six year average

NMRCD-Lima: Influenza surveillance throughout South America continues to show a predominance of pH1N1
CONUS ILI activity: The US CDC has announced increases in ILI in the SE United States with some severe cases in Georgia;AFHSC is monitoring both ILI and lab data and is currently not seeing increases at MTFs in the same region
http://www.afhsc.mil/fluReports
 
Re: Armed Forces Health Surveillance (AFHSC)--week 13

Re: Armed Forces Health Surveillance (AFHSC)--week 13

Week 13:

DoD Summary
Clinic visits for influenza-like illness (ILI) have remained stable across the military health system (MHS)
No influenza-associated hospitalizations or deaths were reported this past week
This will be the last AFHSC Weekly Influenza Summary for this season

AFHSC
Both ILI and pneumonia and influenza (P&I) levels have remained unchanged over the last three weeks
The percent of ILI clinic visits continues to track below levels experienced in the two previous years
There were no new influenza or pneumonia-associated hospitalizations reported this week

Naval Health Research Center
Febrile respiratory illness rates are substantially elevated at MCRD San Diego due to adenovirus types 4 and 14
No reported increases in febrile respiratory illness among personnel aboard ships or at major ports

United States Air Force School of Aerospace Medicine
Laboratory confirmed influenza continues to decrease across the sentinel surveillance network
Molecular analysis of the most recent pH1N1 viruses continues to align closely with the monovalent vaccine strain
http://www.afhsc.mil/fluReports

NOTE: Week 21 is reported in above link.
 
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