For older people, reports of "fowl pest" are nothing new. But when fowl pest-avian influenza-infects and even kills people, this is a sign that the virus is mutating and becoming more virulent, which for epidemiologists is a nightmare scenario.
對老一輩人來說，「雞瘟」不是新鮮事，但雞瘟竟會傳染給人甚且致人於死，則是病毒變異增強的警訊，也是流行病學界的噩夢。