The Spread of coronavirus
A coronavirus is a kind of common virus that causes an infection in your nose, sinuses, or upper throat. Most coronaviruses aren't dangerous.
But In early 2020, after a December 2019 outbreak in China, the World Health Organization (WHO) identified a new type, 2019 novel coronavirus (2019-nCoV), which can be fatal. The organization named the disease it causes COVID-19.
The outbreak quickly moved from China around the world. It spreads the same way other coronaviruses do: through person-to-person contact.
Symptoms can show up anywhere from 2 to 14 days after exposure. Early on, they're a lot like the common cold. You might notice:
Infections range from mild to serious. The virus can turn deadly if it leads to pneumonia, respiratory failure, or septic shock. Those most at risk of death are the elderly and people with weakened immune systems.