近日，“甲流”“全国流感病毒阳性率快速上升”等话题登上热搜，不少网友纷纷表示自己出现了头热、发晕、喉咙痛等症状。流感（influenza）是一种影响人类呼吸系统的病毒感染，自去年12月以来，流感病例一直在上升。Cases of influenza, ...

BEIJING, Jan. 12 (Xinhua) -- There are no new infectious diseases in China, and the current respiratory infectious diseases in the country are all caused by known pathogens, according to an expert ...