There is no virus definition database that needs to be updated regularly, no subscription, and no service agreement.

没有病毒定义数据库，需要定期更新，没有订阅，没有服务协议。

youdao

There is no indication of virus adaptation through transfer from human to pigs at this time.

目前尚无迹象表明病毒通过从人身上转移到猪身上而出现适应性。

youdao

As there is no vaccine for this virus, control measures during outbreaks are focused on classical hygiene measures including frequent hand-washing and disinfection of soiled clothing and surfaces.

由于对此类病毒没有疫苗，疫情暴发时的控制措施主要是一般性卫生措施，包括勤洗手和对污染的衣物和场所消毒。

youdao

There is no sign that the virus is being transmitted from human to human.

NPR: Asian Stocks Up, Japan's Nikkei Extends Gains

The World Health Organization says there is no evidence yet that the virus is being transmitted between humans.

BBC: China steps up bird flu precautions

According to the WHO, there is no evidence that the H7N9 virus is being transmitted between people, and most cases come from poultry.

BBC: China bird flu: Beijing reports its first case