Published Date: 2012-10-13 22:07:10
Subject: PRO/EAFR> Influenza (16): Africa update, WHO
Archive Number: 20121014.282254
Best-List-Unsubscribe: http://ww4.isid.org/promedmail/subscribe.php
INFLUENZA (16): AFRICA UPDATE, WHO
**********************************
A ProMED-mail post
http://www.promedmail.org
ProMED-mail is a program of the
International Society for Infectious Diseases
http://www.isid.org
Date: Fri 12 Oct 2012
Source: WHO Surveillance and monitoring [summ., edited]
http://www.who.int/influenza/surveillance_monitoring/updates/2012_10_12_surveillance_update_170.pdf
Influenza update number 170
---------------------------
Summary
-------
Seasonal influenza transmission has not been picked up yet in the northern temperate zone.
In the tropical areas most countries are reporting low or decreasing trends of influenza virus detections.
In Sub-Saharan Africa, Cameroon has reported an increase in influenza virus detections.
The influenza season seem to come to an end in the temperate countries of the southern hemisphere.
Countries in the temperate zone of the northern hemisphere
----------------------------------------------------------
Influenza transmission in all reporting countries in the temperate regions of the northern hemisphere is still minimal, that is, at inter-seasonal levels.
Countries in the tropical zone
------------------------------
Sub-Saharan Africa
Of countries in Sub-Saharan Africa that have reported influenza data, Cameroon has reported an increase of mainly influenza A(H3N2) activity in the past weeks whereas in Ghana influenza activity seems to be decreasing with mainly influenza B virus detections. Kenya continues to report low level of influenza type B activity. Madagascar is reporting influenza B circulation at low levels.
Countries in the temperate zone of the southern hemisphere
----------------------------------------------------------
Influenza activity has continued to decline in all temperate countries of the southern hemisphere.
Temperate countries of Southern Africa
In South Africa, influenza virus detections continue to decrease after a peak in late July 2012 with currently mainly influenza B virus transmission. ILI and SARI cases continue to decrease, with influenza B virus making up the majority of detections in SARI samples positive for influenza virus.
Source of data
--------------
The Global Influenza Programme monitors influenza activity worldwide and publishes an update every 2 weeks. The updates are based on available epidemiological and virological data sources, including FluNet (reported by the Global Influenza Surveillance and Response System) and influenza reports from WHO Regional Offices and Member States. Completeness can vary among updates due to availability and quality of data available at the time when the update is developed.
--
Communicated by:
ProMED-EAFR
<promed-eafr@promedmail.org>
[Declining or low levels of influenza type B transmission are reported in most of Africa except in Cameroon where increasing levels of influenza A(H3N2) transmission have been reported.
A map showing positive influenza cases for each of the influenza transmission zones as of week 39 (23-29 Sep 2012) can be seen at:
http://www.who.int/influenza/surveillance_monitoring/updates/2012_10_12_influenza_update_170_week_39_main.jpg - Mod.JFW]
See Also
Influenza (15): Africa update, WHO 20120929.279244Influenza (14): Africa update, WHO 20120915.275589
Influenza (13): Africa update, WHO 20120901.272447
Influenza (12): Africa update, WHO 20120820.269453
Influenza (11): Africa update, WHO 20120707.264611
Influenza (10): Africa update, WHO 20120610.262245
Influenza (09): Africa update, WHO 20120512.252304
Influenza (08): Africa update, WHO 20120428.251107
Influenza (07): Africa update, WHO 20120428.251105
Influenza (06): Africa update, WHO 20120331.247573
Influenza (05): Africa update, WHO 20120317.246232
Influenza (04): Africa update, WHO 20120305.245112
Influenza (03): Africa update, WHO 20120204.242307
Influenza (02): Africa update, WHO 20120122.240771
Influenza: Africa update, WHO 20120110.239550
2011
----
Influenza (26): Africa update, WHO 20111218.237549
Influenza (25): Africa update, WHO 20111205.236483
Influenza (24): Africa update, WHO 20111126.235804
Influenza (23): Africa update, WHO 20111105.234620
Influenza (22): Africa update, WHO 20111009.232090
Influenza (21): Africa update, WHO 20110925.230552
Influenza (20): Africa update, WHO 20110912.229049
Influenza (10): Africa update, May 2010-April 2011 20110528.222425
Influenza (05): Zambia (Copperbelt) 20110409.220776
Influenza: Egypt 20110117.217253
2010
----
Influenza (05): Egypt (Beheira) 20101207.215894
Influenza (01): Zimbabwe 20101018.214260
...................jfw/ejp/be