Published Date: 2007-07-09 23:50:00
Subject: PRO/MBDS> Avian influenza - MBDS region (34): Viet Nam (Ca Mau), RFI
Archive Number: 20070709.2183
AVIAN INFLUENZA - MBDS REGION (34): VIET NAM (CA MAU), REQUEST FOR INFORMATION
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Date: Sun 8 Jul 2007
Source: Thanh Nien News, Reuters report [edited]
<http://www.thanhniennews.com/healthy/?catid=8&newsid=29770>
A group of H5N1-infected ducks has brought the bird flu back to Viet
Nam's southernmost province of Ca Mau, said the Animal Health
Department Saturday [7 Jul 2007].
The outbreak in Dam Doi District's Tan Trung commune wiped Ca Mau's
name off the list of bird flu-free provinces.
Currently, there are 9 other northern provinces plagued by the avian
virus: Nghe An, Hai Phong, Bac Giang, Ninh Binh, Vinh Phuc, Quang
Nam, Thai Binh, Ha Tinh, and Quang Ninh.
Last week [2-8 Jul 2007], the Veterinary Department announced that
1130 chickens and ducks had contracted the flu in Thai Binh and Nghe
An provinces.
Since the beginning of the year [2007], 153.5 million fowl have
undergone a mass national vaccination throughout the country.
[Byline: Luu Thi Hong]
--
Communicated by:
PRO/MBDS <promed-mbds@promedmail.org>
[The return of avian influenza to Ca Mau in the southern region of
Viet Nam is disappointing, although not surprising, as there seems to
be continuing avian influenza activity throughout the country (see
references listed below). The most recent report from Viet Nam to OIE
was follow up report No. 8 dated 7 Jun 2007 (see
<http://www.oie.int/wahid-prod/reports/en_fup_0000005529_20070608_105307.pdf>).
In that report, the majority of outbreaks reported since the
beginning of this current year (2007) were listed as occurring in
"unvaccinated" poultry. One wonders whether that is still the case or
whether outbreaks are now occurring among vaccinated flocks. In
assessing "vaccine failure," it is important to distinguish whether
the etiology of vaccine failure is "failure to vaccinate" or whether
it is a failure in the vaccine, either through administration of poor
quality vaccine due to breaks in maintenance of the required cold
chain (as many vaccines are heat-labile, maintenance of the cold
chain refers to keeping the vaccine at a specified temperature range
from production through administration of the vaccine) or whether the
actual vaccine is ineffective. More information on the vaccination
activities including vaccine used and further studies on vaccine
efficacy in Viet Nam would be very much appreciated.
For maps of Viet Nam showing provinces see
<http://www.angelfire.com/co/hongnam/vnmap.html> and
<http://www.lib.utexas.edu/maps/middle_east_and_asia/vietnam_admin01.jpg>.
- Mod.MPP]
See Also
Avian influenza - MBDS region (33): Viet Nam, vaccination 20070705.2136Avian influenza - MBDS region (32): Viet Nam (Quang Ninh) 20070629.2086
Avian influenza - MBDS region (31): Viet Nam (Bac Giang) 20070619.1981
Avian influenza - MBDS region (30): Viet Nam (Cao Bang) 20070616.1963
Avian influenza - MBDS region (29): Viet Nam (Ha Tinh) 20070614.1944
Avian influenza - MBDS region (28): Myanmar 20070613.1931
Avian influenza - MBDS region (27): Viet Nam, Prevalence, RFI 20070613.1923
Avian influenza - MBDS region (26): Viet Nam (Phu Tho) 20070607.1859
Avian influenza - MBDS region (25): Viet Nam: RFI 20070607.1839
Avian influenza - MBDS region (24): Viet Nam 20070601.1774
Avian influenza - MBDS region (23): Viet Nam 20070530.1745
Avian influenza - MBDS region (22): Viet Nam 20070529.1717
Avian influenza - MBDS region (21): Viet Nam 20070525.1672
Avian influenza - MBDS region (20): Viet Nam 20070524.1657
Avian influenza - MBDS region (19): Viet Nam 20070522.1635
Avian influenza - MBDS region (18): Viet Nam, RFI 20070506.1464
Avian influenza - MBDS region (17): Cambodia, RFI 20070413.1231
Avian influenza - MBDS region (16): Cambodia, susp., RFI 20070409.1188
Avian influenza - MBDS region (15): Thailand (Mukdahan): RFI 20070409.1185
Avian influenza - MBDS region (14): Myanmar 20070402.1122
Avian influenza - MBDS region (13): Viet Nam (Ca Mau) 20070331.1101
Avian influenza - MBDS region (12): Thailand, Viet Nam, collab. 20070327.1054
Avian influenza - MBDS region (11): Laos, Thailand 20070321.0996
Avian influenza - MBDS region (10): Thailand, Laos, Myanmar 20070320.0976
Avian influenza - MBDS region (09): Thailand, conf. 20070319.0963
Avian influenza - MBDS region (08): Thailand, susp, RFI 20070317.0940
Avian influenza - MBDS region (07): Myanmar (Yangon) 20070314.0894
Avian influenza - MBDS region (06): Myanmar: RFI 20070311.0862
Avian influenza - MBDS region (05): Laos, Viet Nam 20070309.0836
Avian influenza - MBDS region (04): Viet Nam 20070308.0822
Avian influenza - MBDS region (03): Myanmar 20070228.0720
Avian influenza - MBDS region (02): Viet Nam 20070226.0697
Avian influenza - MBDS region: Laos, RFI 20070216.0588
Avian influenza - China (03): Hong Kong SAR 20070609.1884
Avian influenza - China (02): Hong Kong SAR, susp. 20070530.1744
Avian influenza - China: Hunan, RFI 20070521.1612
Avian influenza, human - MBDS region (15): Viet Nam 20070706.2153
Avian influenza, human - MBDS region (14): Viet Nam, WHO confirmation
20070629.2099
Avian influenza, human - MBDS region (13): Viet Nam, susp., RFI 20070626.2059
Avian influenza, human - MBDS region (12): Viet Nam, RFI 20070621.2005
Avian influenza, human - MBDS region (11): Viet Nam, RFI 20070616.1964
Avian influenza, human - MBDS region (10): Viet Nam, RFI 20070612.1916
Avian influenza, human - MBDS region (09): Viet Nam, RFI 20070601.1773
Avian influenza, human - MBDS region (08): Viet Nam 20070523.1649
Avian influenza, human - MBDS region (07): Cambodia, WHO 20070410.1209
Avian influenza, human - MBDS region (06): Cambodia 20070406.1156
Avian influenza, human - MBDS region (05): Laos, conf. 20070316.0929
Avian influenza, human - MBDS region (04): Laos, fatal 20070308.0816
Avian influenza, human - MBDS region (03): Laos, susp. 20070304.0763
Avian influenza, human - MBDS region (02): Laos, conf. 20070227.0704
Avian influenza, human - MBDS region: Laos, susp, RFI 20070225.0686
Avian influenza, human (05): China (Fujian), WHO conf. 20070530.1749
Avian influenza, human (04): China, RFI 20070526.1683
Avian influenza, human (03): China (Anhui) 20070329.1077
Avian influenza, human (02): antiviral use 20070321.0999
Avian influenza, human: H9N2, China (Hong Kong SAR) 20070320.0980
..................................mpp/msp/mpp
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