Data from clinical trials suggest that the protection offered by the Pfizer and Moderna coronavirus vaccines likely lasts at least nine months, Marks of the FDA said in April . Meanwhile, studies into natural immunity from being previously infected with the coronavirus have been ongoing for somewhat longer than vaccine trials. The other research, published in the journal EClinicalMedicine on Monday, found that Covid-19 antibodies remained detectable some 10 months after infection among people who had recovered. The researchers found an initial decrease in the presence of Covid-19 antibodies after infection, but between four and 11 months the decline slowed. The researchers found Covid-19 antibodies in 15 of the 19 patients -- and unlike the decline in other antibodies observed, those produced by cells in the bone marrows appeared to remain stable.

Source: CNN May 28, 2021 21:56 UTC