The majority of coronavirus patients were infected by someone who wasn't showing any symptoms of the deadly virus, a new study of cases in China found.
Researchers from the Shanghai Jiao Tong University School of Medicine estimated how long it was taking for someone to become infected with COVID-19.
Using mathematical modelling, the team found that 79.7 per cent of people with the deadly virus caught it from someone not showing any symptoms.
The team also found that the average time someone has the virus and can pass it on before showing symptoms is 3.8 days - earlier than previously assumed.
