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 va ...

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 ...