T cells replace antibodies as a caronavirus indicators

 People infected by caronavirous may not produce sufficient antibodies to be classified as virus infected  Vaccination would be less effective in individuals without sufficient antibodies  T cell identification is a complex process that isn't always used to determine Covid-19 infection  Read further at National Geographic  

 

For further reading on how virus' initiate successful infection

Article  By Carrie Arnold PUBLISHED August 7, 2020