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AFHSC 2011-2012 Flu Season: Weeks 40-18 (Final Report)

Re: AFHSC 2011-2012 Flu Season: Weeks 40-13

Re: AFHSC 2011-2012 Flu Season: Weeks 40-13

Week 13:
The influenza activity increased slightly within the MHS compared to the previous week; influenza activity remains low to moderate in overseas DoD laboratory surveillance networks.
The influenza vaccination rate (final update of the season, as of 29 March 2012) for the DoD (Active Duty component only) was 97%.

Navy and Marine Corps Public Health Center
69 influenza A, 22 B, and 1 unsubtyped positives were detected during Week 13 (includes molecular and rapid tests); the positivity rate in all tested samples has increased slightly to 15.9% from previous week (14.9%).
The proportion of antiviral prescriptions for DoD beneficiaries in the inpatient setting increased this week compared to the previous week (12.3% this week compared to 8.4% last week).

Army Institute of Public Health
Army outpatient ILI visit counts decreased by 44% compared to previous week; possibly due to a data lag in ESSENCE. Influenza A is the predominant virus identified among positive influenza samples this season.

DoD Laboratories/Partners:
Southeast Asia: Low influenza activity with circulation of B only (AFRIMS, NAMRU-2).
Europe: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (USEUCOM).
North Africa: Low influenza activity with co-circulation of influenza A/H3 and B (NAMRU-3).
East Africa: Low influenza activity with circulation of influenza A/H3 only (USAMRU-K).
Central Africa: No influenza activity (USAMRU-K).
South America: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (NAMRU-6)
http://www.afhsc.mil/fluReports?clear
 
Re: AFHSC 2011-2012 Flu Season: Weeks 40-15

Re: AFHSC 2011-2012 Flu Season: Weeks 40-15

Week 15:
Influenza activity remains low to moderate in overseas DoD laboratory surveillance networks and the influenza activity continues to decrease within the MHS from previous weeks.

DoD Laboratories/Partners:
Southeast Asia: Low influenza activity with circulation of influenza B only (AFRIMS, NAMRU-2).
Europe: Moderate influenza activity with decreased samples and co-circulation of influenza A/H3 and B
(USEUCOM).
North Africa: Moderate influenza activity with co-circulation of influenza A/H3 and B (NAMRU-3).
East Africa: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (USAMRU-K).
Central Africa: Low influenza activity with circulation of influenza A/H3 only (USAMRU-K).
South America: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (NAMRU-6).
http://www.afhsc.mil/fluReports?clear
 
Re: AFHSC 2011-2012 Flu Season: Weeks 40-16

Re: AFHSC 2011-2012 Flu Season: Weeks 40-16

Week 16:
The first influenza cases of the season among shipboard population were identified last week. (3 A/H3 & 1 B)
The overall influenza activity remains low to moderate in overseas DoD laboratory surveillance networks and the activity level continues to decrease within the MHS from previous weeks.

DoD Laboratories/Partners:
Southeast Asia: Low influenza activity with circulation of influenza B only (AFRIMS, NAMRU-2).
Europe: Moderate influenza activity with decreased samples and circulation of influenza B only (USEUCOM).
North Africa: Moderate influenza activity with co-circulation of influenza A/H3 and B (NAMRU-3).
East Africa: Moderate influenza activity with co-circulation of influenza A/H3, and B (USAMRU-K).
Central Africa: No influenza activity (USAMRU-K).
South America: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (NAMRU-6).
http://www.afhsc.mil/fluReports?clear
 
Re: AFHSC 2011-2012 Flu Season: Weeks 40-17

Re: AFHSC 2011-2012 Flu Season: Weeks 40-17

Week 17:
No influenza cases among shipboard populations were detected last week.
The overall influenza activity remains low to moderate in overseas DoD laboratory surveillance networks and the activity level continues to decrease within the MHS from previous weeks.
An enhanced surveillance program for the novel strain A(H3N2)v has not detected any positive samples to date.

Navy and Marine Corps Public Health Center
27 influenza A and 23 influenza B positives were reported during Week 17 (includes molecular and rapid tests); the overall influenza positivity rate continues to decrease since Week 10.
The number and proportion of antiviral prescriptions for DoD beneficiaries in the inpatient setting increased slightly from last week compared to this week (10.3% and 14%, respectively).

DoD Laboratories/Partners:
Southeast Asia: Low influenza activity with circulation of influenza B only (AFRIMS, NAMRU-2).
Europe: Low influenza activity with circulation of influenza B only (USEUCOM).
North Africa: Moderate influenza activity with co-circulation of influenza A/H3 and B (NAMRU-3).
East Africa: Moderate influenza activity with co-circulation of influenza A/H3, and B (USAMRU-K).
Central Africa: No influenza activity (USAMRU-K).
South America: Moderate influenza activity with co-circulation of influenza A/H1, A/H3, and B (NAMRU-6).
http://www.afhsc.mil/fluReports?clear
 
Re: AFHSC 2011-2012 Flu Season: Weeks 40-18 (Final Report)

Week 18:
This is the final issue of the DoD Influenza Surveillance Summary for the 2011-2012 season.
The overall influenza activity remains low to moderate with predominantly influenza A/H3 & B in overseas DoD laboratory surveillance networks, except in Southeast Asia & Central Africa where no influenza activity is detected.
The influenza activity level within the MHS continues to decrease from previous weeks.

DoD Laboratories/Partners:
Southeast Asia: No influenza activity (AFRIMS, NAMRU-2).
Europe: Low influenza activity with co-circulation of influenza A(unsubtyped) and B (USEUCOM).
North Africa: Moderate influenza activity with co-circulation of influenza A/H3 and B (NAMRU-3).
East Africa: Moderate influenza activity with co-circulation of influenza A/H3 and B (USAMRU-K).
Central Africa: No influenza activity (USAMRU-K).
South America: Moderate influenza activity with co-circulation of influenza A/H3 and B (NAMRU-6).
http://www.afhsc.mil/fluReports?clear
 
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