标签：Polio - 英国华人论坛

明天，卫生部门紧迫宣告，英国发现了脊髓炎Polio病毒。这是几十年来，英国第一次发现。同时，官员们敦促家长关注孩子的安康状况，由于脊髓炎极可能会在个体之间传布开来。 Pol...英国华人论坛

Currently there are two polio vaccines that are in use throughout the world to fight against polio. Jonas Salk, the man who invented the first, started his work on a vaccine in 1955. The vaccine worked in two steps: first a dose of killed po...英国华人论坛