... in Morbidity and Mortality Weekly Report, a study analyzing vaccination data in 81 communities in Los Angeles County finds that the vaccine had a greater impact on COVID-19 infections in lower-income communities than in their higher-income counterparts.
Some countries continue to report high COVID-19 burdens, reflected mainly in hospitalization and death data, the World Health Organization (WHO) said in its latest weekly update. ..
Early studies from China in 2020 suggested people with certain blood types—specifically blood type A—might be at greater risk for getting infected—while those with type O may be protected against infection. Some small studies confirmed the connections, while others did not, leaving public health experts agnostic about how important blood type might be as a potential risk factor for COVID-19.
A new analysis suggests that the Omicron variant has comparable intrinsic severity to the ancestral (Wuhan) SARS-CoV-2 strain, but its effective severity is substantially lower because of vaccination.
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Case-patients with at least one dose of Pfizer-BioNTech or CoronaVac vaccine had significantly lower odds of mortality than unvaccinated patients, the authors said, with the lowest odds observed in people who had received three Pfizer doses (odds ratio, 0.31; 95% CI, 0.18 to 0.49).
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