Communicable Diseases Intelligence 2020 - COVID-19 ...

No correlates of immunity have been established but two challenge trials of rhesus macaques suggest that individuals with neutralising antibody titres between 8 and 200 were protected from clinical signs of disease (but not viral shedding) when exposed to SARS-CoV-2 at 28 and 35 days after initial challenge.50,51 Cell-mediated immunity has also ... ................
................