COVID-19(12) SARS-CoV-2(10) caused(6) coronavirus(6) acute respiratory syndrome(6) Biological Rhythms(5) viruses(5) Day(4) Host(4) vaccination(4) Infection(4) age(4) Spike antibody(4) seasonality(4) quantified(4) pandemic(4) Vaccine(4) health care workers(4) Host immune response(4) SARS-CoV-2 vaccination(4) worker(4) reduced(4) public health(4) COVID-19 pandemic(4) Sex(4) Pathogens(4) time of day(4) reported(4) circadian clock(4) Antibody Response(4)