18
Jun
COVID-19 spreads easily among people who live together and other family members, even before an infected person shows any symptoms, according to a modelling study that is the first-of-its-kind to quantify symptomless transmission. The research, published in The Lancet Infectious Diseases journal on Wednesday, also suggests the SARS-CoV-2 that causes COVID-19 may spread more easily in households than severe acute respiratory syndrome (SARS) or Middle East respiratory syndrome (MERS). The analysis, based on contact tracing data from 349 people with COVID-19 and 1,964 of their close contacts in Guangzhou, China, found that people with COVID-19 were at least as infectious…