5 times lower immunity after 2nd Pfizer

The Francis Crick Institute reveals how Covid 19 vaccines can lower your natural immunity by a factor of 5 once having had the second dose.The Francis Crick Institute is a biomedical research centre in London, which was established in 2010 and opened in 2016. The institute is a partnership between Cancer Research UK, Imperial College London, King's College London, the Medical Research Council, University College London.