COVID-19 Study: How people pass on the virus

Researchers and scientists in China have been investigating the spread of the Coronavirus. And they have discovered that 80% of those who contracted the SARS-CoV-2 are from people who showed no physical signs or symptoms of it. They also found out that it takes at least 3.8 days before they start to show symptoms.

According to Daily Mail, scientists from Shanghai Jiao Tong University School of Medicine in Shanghai have been trying to identify how long it takes for someone to become infected with the SARS-CoV-2 virus, which causes COVID-19. The team discovered via mathematical modeling that the majority of people with the virus may have contracted it from someone who has not shown any symptoms at a rate of around 80%.

They also discovered that the estimated time for someone to get infected and to pass it on before showing symptoms is 3.8 days — earlier than everyone previously thought. According to Weituo Zhang and other researcher colleagues, their findings have shown that isolation alone is not enough and has to be combined with accurate testing and contact tracing.

There have also been some reports that the incubation period of the SARS-CoV-2 virus, along with the most recent estimates, shows in about 2.5 days. In these reports, plus based on people’s movements, the Shanhai team calculated the average infection time in Wuhan and outside of it after the lockdown.