Studies have shown that a significant percentage of spread happens within households when people are sharing common areas like kitchens and bathrooms.
WHO and others have also warned that in indoor spaces with poor ventilation, transmission happens more easily because the virus can be spread in the air and infectious particles might remain suspended in the air for several hours.
Superspreader events have been traced to nightclubs, gyms and even choir practices. The coronavirus does not transmit as often outdoors because fresh air disperses the virus particles and people are more easily able to keep their distance from others. But experts caution that if people spend extended periods of time outdoors close to others without wearing masks, coronavirus spread is still possible.
Health officials say the best way to stop transmission of the virus is to wear a mask in public, stay at least 6 feet away from people not in your household and frequently wash your hands.