Diseases, Conditions, Syndromes

COVID-19 vaccines halve the risk of reinfection, study finds

Among those who have recovered from a coronavirus infection, vaccinated people have a halved risk of becoming infected a second time or contracting COVID-19 again with severe symptoms compared to those who are not vaccinated.

Diseases, Conditions, Syndromes

Repeat COVID infections increase risk of health problems: study

People who have had COVID more than once are two or three times more likely to have a range of serious health problems than those who have only had it once, the first major study on the subject said Thursday.

Diseases, Conditions, Syndromes

Prior SARS-CoV-2 infection less protective against Omicron variant

(HealthDay)—Previous severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is about 90 percent effective for preventing reinfection with the alpha, beta, and delta variants but offers lower protection against ...

Diseases, Conditions, Syndromes

Study of U.S. employees defines the odds of COVID-19 reinfection

In 2020 and early 2021, people who had been infected with SARS-CoV-2 had around 72% to 86% protection against reinfection with the virus for at least six months, according to a new study published February 10 in PLOS Biology ...

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