PRO/AH/EDR> COVID-19 update (160): variants, research, India, WHO

COVID-19 — Worldwide/Unknown
– Immune response differences to vaccines and COVID: A pre-peer-reviewed study compared immune responses in people infected with SARS-CoV-2 and people vaccinated with the Pfizer vaccine. The immune response in infected people involved strong interferon activity that was absent in vaccinated people; interferon is a type of antiviral inflammation that leads to more potential cell damage. The T and B cells in vaccinated people were also more likely to be memory cells, which are capable of