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China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4

A

alert

Senior Moderator
Not good. :(

http://promedmail.org/pls/apex/f?p=..._BACK_PAGE,F2400_P1001_PUB_MAIL_ID:1000,90525

Archive Number 20111003.2980
Published Date 03-OCT-2011
Subject PRO/EDR> Poliomyelitis - worldwide (15): China, RFI

POLIOMYELITIS - WORLDWIDE (15): CHINA, REQUEST FOR INFORMATION
**************************************************************
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: Sat 1 Oct 2011
Source: BBC [in Chinese, machine trans., edited]
<http://www.bbc.co.uk/zhongwen/trad/mobile/rolling_news/2011/10/111001_rolling_beijingpolio.shtml>


China CDC has identified 3 students from Xinjiang studying in Beijing,
having latent infection with wild poliovirus [WPV]. [Presumably latent
infection refers to non-paralytic infection. - Mod.MPP]

Beijing has not had wild poliovirus cases in 27 years.

[While these cases are not considered paralytic polio cases] their
fecal excretion of the virus can be transmitted to others.

After the polio epidemic in Xinjiang and Tianfa Sheng, the Chinese all
over the country are beginning screening.

--
Communicated by:
ProMED-mail Rapporteur Angela Huang

[In another Chinese language newswire article there is mention that
the 3 individuals were symptom-free and were attending a meeting in
Beijing, and that the WPV identified was type 1 (see
<http://www.fawan.com/Article/bs/ms/2011/09/29/154734131730.html>).
From the newswires, it appears as though the Chinese government is
undertaking extensive testing of individuals from the affected
province (Xinjiang) around the country albeit there is no specific
mention of this (another Chinese language newswire queried a possible
suspected case in Yunnan
<http://yn.xinhuanet.com/newscenter/2011-10/01/c_131170760.htm>).

The identification of asymptomatic WPV carriers is not surprising as
the paralytic to non-paralytic ratio for WPV infection is known to
range from a high of 1 paralytic case for every 50 infected
individuals to a low of 1 paralytic cases for every 1000 infected
individuals. The identification of these WPV carriers now in Beijing
serves as a reminder of the extensive distances the WPV can travel
"silently", and how a virus genetically similar to one circulating in
Pakistan, very quickly travelled from Pakistan to Western China, to
the capital of China in the Eastern part of the country (for a map of
China with Provinces and bordering countries, see
<http://www.vbmap.org/asia-maps-7/china-map-provinces-103/>).

As a reminder, as of 28 Sep 2011, there have been 10 confirmed cases
of polio, all residing in Xinjiang Uygur Autonomous Region; all but
one case were from Hotan Prefecture, with the most recent date of
onset 5 Sep 2011 in a case residing Bazhou Prefecture. The WPV1
responsible for this outbreak was identified as genetically similar to
the WPV1 currently circulating in Pakistan, which does share a border
with the Xinjiang Uygur Autonomous region.

More information on the status of polio in China including current
monitoring activities from knowledgeable sources would be greatly
appreciated. Information on the current control measures is available
from the Global Polio Eradication Initiative at
<http://www.polioeradication.org/tabid/408/iid/158/Default.aspx>.

For the map of locations of cases of wild poliovirus associated cases
in China (and worldwide), see
<http://www.polioeradication.org/Dataandmonitoring.aspx>. - Mod.MPP]
 
Re: Beijing: Three wild poliovirus type 1 (WPV1) infections

Re: Beijing: Three wild poliovirus type 1 (WPV1) infections

Please see this thread:

Polio Cases Reported in China’s Xinjiang Province, Xinhua Says

machine translation -


Beijing was first discovered 27 years infected with polio
2011-10-01 14:23 Yunnan Network


Beijing Municipal Health Bureau, September 29 issued weekly epidemic that Beijing found three samples of suspected polio wild virus, three were infected with the students enrolled in Hotan, Xinjiang to Beijing, currently the hospital for observation, which is 27 in Beijing years for the first time that wild poliovirus hidden sexy with HIV. Whether there are suspected cases in our province? Yesterday, the provincial health department said the suspected case does not appear in our province.


At present, China's implementation of national immunization programs, the application of live attenuated polio vaccine (commonly known as candy vaccine) can prevent the spread of wild poliovirus, the immunization program are: basic immunization in children 2 months, 3 months, 4 months of age when the service once, 4 years old be reinforced again.


　　Remind parents to make disease prevention routine health, environmental sanitation, elimination of flies, to develop health habits is very important. During the epidemic, many children people should be less to go places, to avoid excessive fatigue and cold.


　　Background Links


　　August 26, Hotan, Xinjiang region of China with poliomyelitis (polio short) imported wild virus outbreak. The epidemic has reported 4 cases, the age of 4 months to 2 years old.

http://china.huanqiu.com/roll/2011-10/2053071.html
 
Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

I believe the counts in this thread title are inaccurate.

I think that Xinjiang has reported 10 paralytic cases so far this year, including the four above, (and who knows how many asymptomatic/non-paralytic ones) and that is where the total is coming from. These three non-paralytic infections in Beijing are in addition to those 10. Only paralytic cases need be reported to WHO under the IHR. So the total for the country is far more than 10 infections, it is just that only 10 have been paralytic.
 
Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

alert said:
I believe the counts in this thread title are inaccurate.

I think that Xinjiang has reported 10 paralytic cases so far this year, including the four above, (and who knows how many asymptomatic/non-paralytic ones) and that is where the total is coming from. These three non-paralytic infections in Beijing are in addition to those 10. Only paralytic cases need be reported to WHO under the IHR. So the total for the country is far more than 10 infections, it is just that only 10 have been paralytic.
Click to expand...

I changed the title. I think we will not know the totals with any degree of certainty.
 
Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4, 10 total for 2011

sharon sanders said:
I changed the title. I think we will not know the totals with any degree of certainty.
Click to expand...

Agreed. With WPV infections, all most countries even try to count is paralytic cases, by simply testing all AFP cases for polio. Countries that have sufficient resources to find non-paralytic cases usually have sufficient resources to prevent transmission in the first place.
 
Re: China - Wild Poliovirus type 1 (WPV1) infections: Beijing = 3, Xinjiang region = 4

Polio cases reach 20 in Xinjiang

English.news.cn 2011-12-14

URUMQI, Dec. 14 (Xinhua) -- The number of polio cases recorded in northwest China's Xinjiang Uygur Autonomous Region since an outbreak was confirmed in August has reached 20, local health officials said Wednesday.

The Chinese Center for Disease Control and Prevention had been testing samples taken from patients in the region diagnosed with Acute Flaccid Paralysis (AFP), a common indicator of polio, to check for the disease. On Dec. 5, the tests uncovered two new polio cases, said the officials.

One of the samples was taken from a 53-year-old patient from Aksu prefecture who died on Oct. 23, taking the confirmed number of deaths from polio in the Xinjiang outbreak to two.

Poliomyelitis, or polio, is a viral disease of the brain and spinal cord that mainly affects children under five years of age. One in 200 infections leads to irreversible paralysis, usually in the legs.

AFP is a sudden onset of weakness or paralysis, as is commonly found with polio.

Local health officials said the first three cases of this year's polio outbreak came from abroad.

Xinjiang neighbors three of the four polio-endemic countries in the world: Afghanistan, India, Nigeria and Pakistan.

The local government has conducted large-scale vaccinations in response to the region's polio epidemic that started in August, when the first cases of the disease in China since 2000 were discovered.

Health authorities said four regions in Xinjiang -- the prefectures of Hotan, Kashgar, Bayingolin and Aksu -- were classified as epidemic zones.

Xin Hua
 
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