NAIROBI, July 16 (Xinhua) -- Kenya has vaccinated some 21.3 million children against typhoid and measles in its latest campaign against the two infectious diseases, the biggest vaccination drive in th ...

1915年的今天，人称“伤寒玛丽”(Typhoid Mary)的玛丽·马伦(Mary Mallon)第二次在纽约城遭到隔离。尽管她从未显示出任何患病的症状，但余生还是在幽禁中度过。 1906年，卫生官员认为马伦与七个富人家庭爆发伤寒有关，她在这七个 ...