3 ms·

There have been variants but none so dissimilar that they are considered a new strain. The terminology is very precise here but the media have been mixing it up

• ismail 6y ago
  Thanks for this link. From the article she states: “Mutations that alter any of the following can lead to a new strain: pathogenicity virulence immunogenicity.” And “ Another way that the term strain is used is when a particular variant of the virus (the virus with a specific set of mutations) ” This sounds like the mutation referenced in the paper could be considered a “new strain” given the above? “ Until there is clear evidence supporting functional or immunogenic differences among the variants, it is appropriate to consider all of these lineages of the same virus.”