CDC, increased infection risk in vaccinated

may be more capable of causing infection in people who have previously had COVID-19 or who have received COVID-19 vaccines. New variant and vaccine escape Risk Assessment Summary for SARS CoV-2 Sublineage , detected in Denmark and Israel At least two cases in the United States. UK Health Security Agency, UK case, no recent travel history Cases not epidemiologically linked (therefore already widespread) Multiple genetic differences from previous SARS-CoV-2 Existing tests appear to be effective may be more capable of causing infection in people who have previously had COVID-19 or who have received COVID-19 vaccines. ? stimulation of T suppressor (regulatory) cells ? stimulation of IgG4