Experts suggest four provinces in East China should prevent rural poultry and migratory birds in contact
Zeng Guang, chief scientist of the Chinese Center for Disease Control Epidemiology, Chaoyang District CDC expert advisory experts said yesterday that there are now nearly 40% of the H7N9 avian flu patients not clear poultry history of exposure to an urgent need to find the sources of infection.
Reporters learned from Chaoyang District CDC, from the situation of the confirmed cases, cases over the age of 50 accounted for 78%, over the age of 60 accounted for 71% of the cases in the elderly population is susceptible groups.
Recommend screening healthy people carrying the virus
Chaoyang District, discovered the first case of healthy people carry the H7N9 avian influenza virus, this finding is very important. "Zeng said," there are now nearly 40% of patients do not have a clear history of poultry contact, these people in the end is how infection? Still a mystery. "
He suggested that screening healthy people carry the H7N9 avian influenza virus isolated phenomenon or a common phenomenon in other regions. If healthy people can carry H7N9 avian influenza virus widely, it is necessary to appropriate prevention and control measures.
H7N9 avian flu patients may have a detoxification period
Zeng Guang said the H7N9 avian influenza virus in patients with a detoxification period may still exist, "he did not spread to close contacts does not mean not to detox." He further explained that this is because only a handful of bird flu receptor allow the virus to enter the body.
"We are the prevention and control of patient long will it take?" He said, such studies need to be strengthened, and equally important to study the virus variability.
Zeng Guang, also believe that the urgent need to clarify the natural history of the H7N9, or prevention strategy is difficult to say right or wrong.For example, the disease incubation period how long? Now say seven days but this inference is based on other avian influenza, not according to the disease detected. "
Public concern about the H7N9 vaccine, Zeng Guang, now or in the virus during the study period, should avoid the virus did not study clearly on the vaccine.http://news.xinhuanet.com/fortune/2013-04/17/c_124589659.htm
