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 that causes COVID-19, come into being?
A:How terrible !The COVID-19 has been spread all over the world .B:Yes.Lots of people are suffering from it.Have you got the vaccine (疫苗) yet ?A: (1) Yes,I have.I got the first one last week.B:Good. (2) When will you get the second one?A:I'll get the second one nex...
but this is not thought to be the main way the virus spreads.Spread from contact with the contaminated(受污染的) surfaces of objects It may be possible that a person can get COVID-19 by touching the surface of an object that has the virus on it ...
The bottom line:The best way to protect yourself from coronavirus and prevent the spread is to wash your hands, avoid touching your face, cover your coughs and sneezes, keep a distance from people in public, and stay home if you’re ill. ...
The virus most often spreads through people who have symptoms. But it is possible to pass it on without showing any signs. Some people who don't know they've been infected and never develop symptoms can give COVID-19 to others. This is called asymptomatic spread. You can also pass it ...
Alice, Bob, Cindy, and Frank meet on July 3, 2020. Over the preceding week, on average 184,617 new Covid-19 infections per day have been reported worldwide, a 13% increase over the previous week. In the U.S., the corresponding increase has been 39%. The Fourth of July national ...
【题目】Answer the questions(根据以下内容回答问题How COVID-19 SpreadsPerson-to-person spreadThe virus is thought to spread mainly from person to person. Between people who are in closecontact with one another (within about 6 feet), through respiratory droplets(飞沫) produced when aninfected ...
How long do COVID-19 symptoms take to show? On average it takes 5–6 days from when someone is infected with the virus for symptoms to show, however it can take up to 14 days. Can dogs and other pets get COVID-19? The virus that causes COVID-19 can spread from people to pets,...
"COVID-19 can be spread by people who do not have symptoms and do not know that they are infected," the CDC says. But WHO notes that more data is needed to better understand transmission. "WHO is working with countries around the world, and global researchers, to gain better evidence-...
The virus most often spreads through people who have symptoms. But it is possible to pass it on without showing any signs. Some people who don't know they've been infected and never develop symptoms can give COVID-19 to others. This is called asymptomatic spread. You can also pass it ...