近期,墨西哥、美国、加拿大等多国发生人感染甲型H1N1流感病毒(4月30日前称为猪流感)疫情。其中疫情较严重的墨西哥已有100多人死于此病,感染病例已达4000多例。墨西哥和美国、加拿大部分城市的人们出门戴口罩,减少集会活动;学校关门停课,餐厅停止营业,医院和药店异常火爆。其他尚未发生疫情的国家也展开全面预防措施。 Recently, the human immunodeficiency virus type A (H1N1) (known as swine flu before April 30) has been reported in many countries in Mexico, the United States and Canada. More than 100 of them have died of the disease in Mexico, where the epidemic is more serious. More than 4,000 cases have been reported. Mexico, the United States and parts of Canada went out wearing masks to reduce rallies, closed classes, shuttered restaurants and unusually hot hospitals and pharmacies. Other countries that have not yet suffered an outbreak have also started comprehensive preventive measures.