Shortridge K, Webster R G, Kam S L, Gardner J M
Bull World Health Organ. 1979;57(3):475-7.
Serological studies on domestic poultry originating from China and Hong Kong suggest that the H1N1 virus may have persisted in domestic chickens prior to its reappearance in man in 1977. Experimental infection of young, local strains of poultry provided equivocal evidence that 4-day-old chickens could be infected; virus was not recovered from infected 1-month-old chickens.
对来自中国内地和香港的家禽进行的血清学研究表明,H1N1病毒可能在1977年再次出现在人类身上之前就已在家鸡中持续存在。对当地年轻品系家禽进行的实验性感染提供了不明确的证据,表明4日龄鸡可能被感染;但未从受感染的1月龄鸡中分离出病毒。