Experts study possible spread of virus by migratory birds

[tetano]

BEIJING, April 13 (Xinhua) -- A group of medical, veterinary and avian experts recently gathered in Beijing to see if there is a relation between the current outbreak of the H7N9 avian flu virus and migratory birds.

Having failed to remove the birds from a list of possible carriers, the experts suggested monitoring not only east China, where the first H7N9 cases were reported, but also northern and northeastern provinces, which lie along the birds' migratory routes.

The new virus is closely related to Eurasian migratory birds, although it is difficult for those birds to transfer the virus to humans, the experts concluded, adding that the spread of the virus may have occurred through an intermediary organism.

Since the new virus had completed its evolution prior to the outbreak and stayed in the bodies of the intermediaries, it would've been impossible to detect the virus at an early stage, the experts said at their meeting, which was held by the State Bureau of Forestry.

The bureau said poultry and birds living on the coast may be the most likely intermediaries.

Participants attending the meeting came from the Chinese Center for Disease Control and Prevention, the Academy of Military Medical Sciences, the Chinese Academy of Sciences, Zhejiang University, Northeast Forestry University and the Chinese Academy of Forestry.


http://news.xinhuanet.com/english/china/2013-04/13/c_132306330.htm

 

[Pathfinder]

Re: Experts study possible spread of virus by migratory birds

Translation Google

The spread of the H7N9 avian influenza path coincide migratory path

IBTimes Chinese researcher Teng Chang roundup | Sunday Apri 14, 2013 22:47 PM

IBTimes Chinese researcher Teng Chang roundup | Sunday June 14, 2013 22:47 PM

The new type of H7N9 avian flu virus first appeared in Shanghai, and now northward spread to Beijing, Henan. It is worth noting that, so far have not found one case of avian flu cases in the south of Zhejiang. From the current area high incidence of H7N9 avian influenza, from Jiangsu, Zhejiang and Anhui, as time goes on, the more northerly Henan Kaifeng, Zhoukou, even in Beijing suffered outbreaks. This path seems to be in line with the roadmap of migratory birds.

At present, China's northern provinces and cities, of close monitoring of local transit migratory birds have begun.

The spread of avian flu routes coincide migratory path

On March 31, China's first human infection of H7N9 avian influenza. After nearly two weeks of time, the three provinces of Zhejiang, Jiangsu, Anhui and Shanghai at a similar latitude regions have appeared human infection with the H7N9 avian influenza.

Including the central and southern of Hangzhou, Huzhou, Jiangsu Nanjing, Yangzhou, Wuxi, Suzhou and other places in northern Zhejiang Province, eastern Anhui province, Nanjing, Chuzhou city circle.

The only exception is the northern Anhui Bozhou. April 7, Bozhou of the confirmed cases of avian influenza. This patient is disease, on March 28 and and sicker April 1.

April 7, the Ministry of Agriculture's National chief veterinarian at Kangzhen, when it comes to the H7N9 avian flu, has said the virus is not ruled out by migratory birds into the country.

The National Bird Bird Banding director of the Center for the Army, said in a media interview, three or four months, in east China is the migration of migratory birds have more than 230 kinds.

Anatidae March, all the way north to fly from the middle and lower reaches of the Yangtze River, and eventually reach the three northeastern provinces; herons, storks and other waders from Shanghai in April and May, to reach the Yalu; gulls also three or four months moved north, to reach the end of April Siberia; forest birds flying north from early March, early in March to reach Hebei, reach the Northeast by the end of April.

In other words, to the end of April to May, these migratory birds will arrive in the northeastern part of China.

Bird migration is not the precise route, starting from the middle and lower reaches of the Yangtze River Plain, Shandong, Henan, Shanxi, Hebei, Beijing, Tianjin, Liaoning, Jilin and Heilongjiang, are likely to migratory birds through the.

From April 13, Beijing, Henan northern region have appeared human infection with the H7N9 avian influenza. At the same time, the area south of the north of Zhejiang in China, so far not yet found a case of human infection of H7N9 cases. This infection path seems to be coincident with the direction of migratory birds.

Northern provinces such as Beijing and Tianjin Luyu strictly prevent migratory birds

Currently, a number of provinces and cities of northern China, are beginning to pay attention to the avian influenza virus in migratory birds may bring. The local first case of human infection with the H7N9 avian flu patients in Beijing, the Beijing Municipal Health Bureau Disease Control and Prevention Center, Ren Dengying on, this is when migratory birds fly from south to north, facing risk. Currently, agricultural and garden department has started to increase in poultry, including wildfowl, including monitoring. Remaining migratory birds Tianjin dozen migratory birds Stations of, also began to focus on monitoring transit, whether the abnormal phenomenon, the implementation of the daily reporting system, and to remind local visitors outing avoid migratory bird habitat.

In addition, through the northern provinces of Shandong, Hebei and other migratory birds may have started to increase the monitoring of the transit of migratory birds, Shandong monitoring hotline is open 24 hours to accept the public reflect on the unusual circumstances of migratory birds.

May migratory birds have arrived in the three northeastern provinces, or the need to focus on

Four of migratory birds due to the south-east, at the end of April to early May, reach the three northeastern provinces of China. Comb along migratory routes, according to the calendar year, Hebei, Liaoning, Jilin, Heilongjiang the migratory birds high frequency provinces, three provinces in Northeast China is the ultimate breeding ground for many migratory birds and stopping places.
Therefore, starting from the end of April, May, northeast China may need to be focused on.

On the other hand, due to the H7N9 avian influenza in poultry body of low pathogenicity, also led to this new type of avian influenza in poultry body, and still more difficult to prevent and control.

http://cn.ibtimes.com/articles/25957/20130414/613329.htm

 

[AlaskaDenise]

Re: Experts study possible spread of virus by migratory birds

Some good migratory bird maps for China can be found here:

(main map)

http://www.werc.usgs.gov/ResearchTopicPage.aspx?id=17


(Qinghai Lake)
http://www.werc.usgs.gov/ProjectSubWebPage.aspx?SubWebPageID=1&ProjectID=40&List=SubWebPages&Web=Project_40&Title=Wild Birds and Emerging Diseases: Modeling Avian Influenza Transmission Risk Between Domestic and Wild Birds in China

(Hong Kong)
http://www.werc.usgs.gov/ProjectSubWebPage.aspx?SubWebPageID=1&ProjectID=37&List=SubWebPages&Web=Project_37&Title=Movements of Wild Birds and Emerging Disease Risk from Hong Kong

(Poyang Lake ducks)

http://www.werc.usgs.gov/ProjectSubWebPage.aspx?SubWebPageID=1&ProjectID=41&List=SubWebPages&Web=Project_41&Title=Ecology and Conservation of Wild Birds in the Poyang Lake Region: a Satellite Telemetry Pilot Project

.

 

[tetano]

Re: Experts study possible spread of virus by migratory birds

Experts: The migratory bird migration or lead into Beijing the H7N9 bird flu virus


\"Bird flu whether is the feather infects to the human?\"Today (15th), Beijing prevented and controlled significant zoology and botany epidemic situation headquarters vice-commander, Bureau of agriculture deputy director Liu Yaqing said during the interview, recently, Ministry of Agriculture is the first domestic animal in vivo examines this hypotype virus. At present the mechanism of origin and dissemination of this virus, as well as infection in animal was still not explicit, has many uncertainty. As for the relations of H7N9 bird flu this virus and human infect, but also needs to further study. After replying netizen \"which feather infects H7N9 to display exceptionally?\"When inquiry, Liu Yaqing said: \"After feather infection, has a fever, Gives off heat, but did not present a large area of death like H5N1. \" \"Quite is easy to manifest suddenly to the spring regarding bird flu?\" The issue, Liu Yaqing believes that Because this season is the season that the migratory bird returns, therefore the migratory bird should disseminates the principal channel of bird flu virus. Although Beijing in the monitor had not discovered temporarily our country has the wild birds to carry the H7N9 virus, but this is a rule, Did not remove this virus to lead into the possibility in this city by the migratory bird migration. \"Like the present serious epidemic disease headquarters, involves the landscape bureau and park administration center, The water supplies department has the respective responsibility, monitors the park, reservoir and migratory bird habitat, the bureau of agriculture to frees-rang the household also to carry on the monitoring and monitor. \"Liu Yaqing said. (By Li Nannan)

http://news.china.com.cn/2013-04/15/content_28547692.htm