Immunity

Previous COVID infection provides some immunity for at least 5 months, research shows

Life After COVID: Probably 5 months of immunity

COVID-19 infection provides some immunity for at least five months, UK study finds

Early evidence suggests that the Pfizer vaccine works against the new coronavirus variant

COVID-19 Patients Still Immune Eight Months After Infection: Study

Natural immunity to the coronavirus can take years, research suggests

The law that protects Putin for life in Russia – Europe – International

Studies have shown that COVID-19 can protect against re-infection

Studies have shown that COVID-19 can protect against re-infection

Studies have shown that COVID-19 can protect against re-infection