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2022年12月26日 · What Is COVID-19? Symptoms of COVID-19. Causes of the New Coronavirus. Coronavirus Risk Factors. 19 min read. Editor's note: For the latest updates on the 2023 coronavirus outbreak, see our...
COVID-19 is a respiratory condition caused by a coronavirus. Some people are infected but don’t notice any COVID-19 symptoms (doctors call that being asymptomatic). Most people have mild...
2023年1月3日 · Mild COVID-19 cases still can make you feel lousy. But you should be able to rest at home and recover fully without a trip to the hospital. Here’s what to expect and how to take care of yourself....
2023年12月19日 · COVID-19 Transmission. By understanding how coronavirus spreads, you can take the right steps so you don't get sick and infect others. COVID transmission rate. Recent data from the World Health...
2024年1月7日 · Depending on which COVID-19 variant you've been exposed to, you may test positive 3-5 days later. If you've been exposed to the virus but don't have any symptoms, wait for 5 days before you get ...
2023年11月21日 · Coronaviruses are a big family of different viruses. Some of them cause the common cold in people. Others infect animals, including bats, camels, and cattle. But how did SARS-CoV-2, the coronavirus...
2023年8月17日 · Omicron is a variant of SARS-CoV-2, the virus that causes COVID-19. It first appeared in November 2021 and quickly became the dominant variant around the world. It spreads faster than previous ...
