Scientists were reporting early signs that some recent mutations of the virus that causes Covid-19 may modestly curb the effectiveness of two current vaccines, although they stress that the shots still protect against the disease.Coronavirus cases have surged past 96 million worldwide, fuelled by the emergence of the new variants including one that was first detected in Britain and has now spread to more than 60 nations, according to the World Health Organization. The one that emerged in South…

This post was originally published on South China Morning Post.