免费日韩片_欧美成人精品一区二区男人小说_国产乱码一区二区三区四区_国产精品国产三级国产aⅴ入口_成人看的污污超级黄网站免费_欧美一级在线免费观看_成人午夜免费无码福利片_国产乱人伦偷精品视频色欲_aaa少妇高潮大片免费看_国产精品1234_亚洲精品国产suv一区88_中文字字幕在线中文无码_精品亚洲区_午夜九九九_国产av国片精品jk制服丝袜_色综合亚洲_亚洲成av人片无码bt种子下载_欧美色就色_精品少妇的一区二区三区四区_男人用嘴添女人下身免费视频

A vaccine against bird flu from Beijing-based pharmaceutical company Sinovac Biotech is seen in this undated photo. (AFP)

China has begun human trials of its homegrown bird flu vaccine with six volunteers receiving shots, the Xinhua news agency said on Wednesday.

A total of 120 people, aged from 18 to 60 and all from Beijing and in good health, had volunteered to take part in the trials, Xinhua said.

"After half an hour of clinical observation, the volunteers experienced no bad reaction of either the whole or part of the body," the agency said.

Though the trials will need nine months of tests, initial results are expected within the first three, it added.

The head of the company researching the vaccine, Sinovac Biotech, told Reuters last month that it was at least a year away from hitting the shelves.

Development of the vaccine -- called Panflu -- started last year after bird flu outbreaks in Thailand and Vietnam and animal trials have already been completed.

Experts say experimental vaccines for bird flu are unlikely to be a good match for an H5N1 strain that may eventually emerge in transmissible form among humans.

Using current technology it takes six months or more to make a new flu vaccine and there is no way to predict what a pandemic strain might look like.

Currently, Roche Pharmaceuticals' Tamiflu is one of four drugs known to work against influenza. It does not cure the virus but can reduce the severity of infection and in some cases prevent infection.

Doctors believe it may help control a pandemic of H5N1, although evidence suggests it may be less effective than it is against seasonal influenza.

(Agencies)

homegrown: raised or grown at home錕斤拷錕斤拷錕斤拷錕僥ｏ拷