#transmissibility

In this photograph taken on July 15, 2020 doctors and nurses wearing Personal Protective Equipment (PPE) suits look after a COVID-19 coronavirus patient at the Intensive Care Unit of the Sharda Hospital, in Greater Noida. - Coronavirus cases in India passed one million on July 17, official data showed as authorities struggle to check the spread of the deadly pandemic across the world's second-most populous nation. (Photo by XAVIER GALIANA / AFP)
In this photograph taken on July 15, 202... […]

Contagious and concerning: What we know about Covid-19 variants

Fast-spreading coronavirus variants have ignited global concern over whether existing vaccines will be able to protect the world from a virus that is constantly mutating
This handout illustration image obtained February 27, 2020 courtesy of the Centers for Disease Control and Prevention and created at the Centers for Disease Control and Prevention (CDC) shows the coronavirus,COVID-19. - President Donald Trump has played down fears of a major coronavirus outbreak in the United States, even as infections ricochet around the world, prompting a ban on pilgrims to Saudi Arabia. China is no longer the only breeding ground for the deadly virus as countries fret over possible contagion coming from other hotbeds of infection, including Iran, South Korea and Italy. There are now more daily cases being recorded outside China than inside the country, where the virus first emerged in December, according to the World Health Organization. (Photo by Handout / Centers for Disease Control and Prevention / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /CENTERS FOR DISEASE CONTROL AND PREVENTION(CDC)/HANDOUT " - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
This handout illustration image obtained... […]

What we do and don’t know about new Covid mutations

The emergence of two new variants of Sars-CoV-2, which are potentially far more infectious versions of the virus, has prompted widespread concern. This is what we know about the mutations.