Can people with no Covid-19 symptoms spread Sars-CoV-2? Explained

Coronavirus can extensively contaminate the environment in a short time, a new study found. A study in Nature Medicine had found 44% of infections were spread by people with no symptoms. People with coronavirus are the most infectious two or three days before the symptoms appear. Another study said 48% of cases in Singapore and 62% in Tianjin, China, were spread by people with no symptoms. Watch the video for more details.