Add new virus type (indian variant)
Add the indian variant to the list now that we have data:
Public Health England latest release (see https://www.gov.uk/government/news/confirmed-cases-of-covid-19-variants-identified-in-uk):
the delta (Indian) variant is ~60% more transmissible than the alpha (UK) variant
Also here: https://www.bmj.com/content/373/bmj.n1513