Tại sao cảm cúm thường xảy ra vào mùa đông?
Các nhà nghiên cứu Mỹ đã phát hiện ra vi rút cúm thường “choàng” cho mình một lớp chất béo, vừa để giấu mình, vừa để tự bảo vệ khỏi sự khắc nghiệt của nhiệt độ thấp… và đó là lý do tại sao mùa đông là mùa của cảm cúm.
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4butw7Jj4bqwc8WpY8SC4buHY8awcETGsOG7oWPDsuG7g8OycGPFqeG7uXFj4buP4budY+G6sHHhu5XhurZj4buNceG7m+G6sGPGsHBExrDhu6Fjw7Lhu6nGsGPEkHFjxILhurLhurBjw7LhurLFqWPhu4/hu4PGsOG7oWPhu6Fww7ThurDhurHDoi/hurDhu43huqXDoi/hurDEguG6pcOiL+G6sOG7h8Oz4bunw7XhuqU6cMO14bupY+G7jGrGsGM6xIJy