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Antibody neutralizing titers against SARS-CoV-2 D614G pseudovirus increased by a factor of 4 to 73 for all combinations.
Country-specific information, such as prior vaccination uptake and vaccine hesitancy, may influence the effect of COVID-19 certification mandates.
But increased risks for Bell palsy, encephalomyelitis and Guillain-Barré syndrome were observed following SARS-CoV-2 infection.
39 infections documented in 1,497 health care workers; 19 percent had persistent symptoms despite most cases being mild, asymptomatic
Vaccine effectiveness was 81 to 95% for adults aged 85 years and older, those with chronic medical conditions, and Black or Hispanic adults.
However, for all ages, vaccine effectiveness against severe COVID-19 was high overall, at 90% five months or longer after two doses.
As of May 15, 2021, coverage was lower for non-Hispanic Blacks and Hispanics versus whites; higher for those at risk for severe COVID-19.
The panel is expected to focus on the safety of high-risk Americans, including people 65 and older and anyone with a weakened immune system.
However, acute exercise does not show a benefit for generally inactive people.
No cases of myocarditis were seen after vaccination in small study with 55 patients with a history of myocarditis who were vaccinated.