Friday, April 19, 2013

China claims examining human-to-human spread regarding bird flu

China is researching the probability of human-to-human indication of a fresh strain of bird flu which has killed 17 individuals and is analyzing "family groupings" of individuals contaminated with the virus, a best health official was quoted as stating.


Authorities have slaughtered 1000s of birds and closed a few live poultry stores to slow the rate of people contamination. However several aspects of this fresh variety of bird flu stay a secret, specifically whether the H7N9 strain is being transmitted among people.


China has aware that the number of infection, 82 so far, could rise. Many of the cases and ELEVEN of the fatalities have been in the industrial capital Shanghai.

Feng Zijian, the director of the health emergency centre at the Chinese Centre for Disease Control and Prevention, told reporters on Wednesday that "we are paying close attention to these cases of family clusters.

"(We) are still analysing in-depth to see which has the greatest possibility -- did it occur first from avian-to-human transmission, and then a human-to-human infection, whether they had a common history of exposure, were exposed to infected objects or whether it was caused by the environment," Feng said.

His comments were reported in a statement posted on the website of the National Health and Family Planning Commission.

One of the families that China is studying is made up of two brothers and their father who died of the virus, Feng said.

"This family cluster case still doesn't change our understanding of the characteristics of the disease in general -- that it is transmitted from birds to people and there's no evidence of human-to-human transmission," Feng said.


Efforts to determine the nature of the H7N9 virus are also hampered by a lack of accurate information from the victims on whether they have had contact with poultry, Feng said.

The World Health Organization said on Wednesday that a number of people who have tested positive for the new strain appear to have had no contact with poultry.

The WHO had previously reported two suspected "family clusters", but the first turned out to be a false alarm and the second was inconclusive.

Zeng Guang, chief scientist in charge of epidemiology at the China Disease Prevention and Control Centre (CDPCC), said about 40 percent of human victims had no clear history of poultry exposure, the Beijing News reported.

Feng said that not all patients "can recall the history of exposure. Just like with the H5N1 avian influenza, 50 percent of the patients knew exactly their history of exposure, the other 50 percent can't recall it at all."

He was mentioning to a an particularly virulent tension of bird flu that had elevated the threat of a international pandemic in 2003.


Feng mentioned that as many clients were in crucial situation, the authorities was experiencing delays in obtaining details about their exposure to poultry.


The WHO mentioned a team of experts moving to China shortly would analyze whether the virus can be spread among people, even though there was "no evidence of sustained human-to-human indication".


The state-run China Daily magazine, citing an un-named source, stated the team's speaks with Chinese associates would be held on Sunday. The experts would then go to affected places.



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