Science magazine

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science. Here is the conclusion of the latest review of the Covid virus. In late-December of 2019, the first cases of COVID-19, the disease caused by SARS-CoV-2, were described in the city of Wuhan in Hubei province, China (1, 2). The virus quickly spread within China (3). The cordon sanitaire that was put in place in Wuhan on 23 January 2020 and mitigation efforts across China eventually brought about an end to sustained local transmission. In March and April 2020, restrictions across China were relaxed (4). By then, however, COVID-19 was a pandemic (5). It appears that Science has concluded that the virus started in China but the WHO says it may have been introduced to China from some animal outside of China. Even if that is true the basic question about transmission remains. Why did China close down travel within China but allow the continuation of travel outside of China. In other words if they thought it could infect other people within the country why were they willing to infect others around the world.