More variants but delta still dominates
A new variant of Covid-19 detected in South Africa known as B.1.1.529 has caused flight bans and a scramble to determine vaccine efficacy, but will it overtake delta as the dominant strain of the virus?
Covid treatments: What works, what doesn’t, what might
Overshadowed by the global push for vaccines, the search for treatments for Covid-19 has made steady progress. This is what works, what might work, and what definitely isn't helpful
New virus mutation raises vaccine questions
The British coronavirus variant has increased transmissibility, but other mutations are provoking concern among scientists who are scrambling to work out if they will still respond to vaccines.
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.
Scientists on guard over ‘mutant’ mink coronavirus
Coronavirus transmission from minks to humans does not necessarily mean the disease will become more dangerous, but scientists are closely monitoring the situation in Denmark
How contagious are kids with Covid? Short answer: we don’t know
Are children a major source of contagion for Covid-19? Experts are still divided on the question, even as governments decide whether to keep classrooms open or shut