Coronavirus is a type of germ that can make people sick. It started spreading a lot around the world in 2019, so doctors named it Coronavirus Disease 2019, or COVID-19 for short.
COVID-19 can make people feel really sick, like having a fever, cough, or hard time breathing. It can be spread from someone who is sick if they cough, sneeze, or talk and little droplets come out of their mouth. Then, if someone else touches something that the sick person touched, they can get sick too.
That's why a lot of places around the world are taking extra special steps to try and stop the virus from spreading. Some people are staying home and not going to school or work, wearing masks when they go outside, and washing their hands very carefully with soap and water. Scientists are working hard to find a way to make people not get sick from COVID-19, like by making a vaccine.