什么是感冒 感冒,包括普通感冒(俗称伤风)和流行性感冒。 普通感冒,是鼻、鼻咽、咽喉等上呼吸道的急性炎症,简称“上感”。 流行性感冒,是病毒所致的一种急性呼吸道传染病,主要通过飞沫与直接接触传播,具有高度传染性,常易造成大范围甚至世界性大流行。恐怖的1918年大流感,夺去了大约4000万人的生命。据记载,当时加拿大的渥太华,整个城市死 What is a cold and flu, including the common cold (commonly known as cold) and influenza. The common cold is the nose, nasopharynx, throat and other upper respiratory tract acute inflammation, referred to as “on the flu.” Influenza is an acute respiratory disease caused by viruses. It spreads mainly through droplets and direct contact. It is highly contagious and often causes large-scale or even global pandemics. The horrifying 1918 flu claimed about 40 million lives. According to records, when Ottawa, Canada, the entire city died