More recently, testing of clinical specimens by international experts working in Viet Nam provided further suggestive evidence of more widespread infection with the virus, raising the possibility of community-acquired infection.

• 最近由工作在越南的国际专家有关临床样本的检测对受病毒更广泛感染问题提供了进一步的推测,这种情况增加了在群体中获得感染的可能性。