The team found no laboratory evidence suggesting that human infections are occurring with greater frequency or that the virus is spreading readily among humans.
专家小组认为没有实验室证据表明在人类中发生较频繁的感染或该病毒正在人类中迅速传播。
2
H5N1 infection was confirmed in the 38-year-old father but laboratory test results for his two daughters did not meet criteria for acute H5N1 infections.
38岁父亲的H5N1感染得到了确认，但他的两个女儿的实验室检测结果不符合急性H5N1感染的标准。
3
To understand how infections progress, researchers have traditionally had to kill infected laboratory animals on a daily basis.