Plans to attempt to authorize the Pfizer/BioNTech Covid vaccine for children under 5 before full data are available appear to have run aground. The Food and Drug Administration on Friday canceled a key meeting of its vaccines advisory committee that had been slated for next Tuesday to discuss the submission, […]
The Moderna and Pfizer vaccines have been highly effective at preventing COVID-19. In a new study, researchers looked at the differences in effectiveness between the two vaccines. They found that people who had received two doses of the Moderna vaccine were less likely to develop COVID-19 or become hospitalized with […]
Tras dos años de pandemia, todavía se confirman unas 50.000 muertes por covid cada semana en el mundo. Y la cifra real podría ser el doble o el triple. El nuevo coronavirus sigue matando a un número escandaloso de personas, sobre todo por la falta de vacunación en los grupos más vulnerables. […]
Pfizer-BioNTech’s COVID-19 vaccine has been less effective in South Africa at keeping people infected with the virus out of hospital since the Omicron variant emerged last month, a real-world study released on Tuesday showed. Between Nov. 15 and Dec. 7, people who had received two doses of the shot had […]
Pfizer Inc on Tuesday said final analysis of its antiviral COVID-19 pill still showed near 90% efficacy in preventing hospitalizations and deaths in high-risk patients, and recent lab data suggests the drug retains its effectiveness against the fast spreading Omicron variant of the coronavirus. The U.S. drugmaker last month said […]
Summary What is already known about this topic? mRNA COVID-19 vaccines are effective in preventing severe COVID-19. Some studies have shown declines in vaccine effectiveness against severe COVID-19 with increasing time since vaccination. What is added by this report? During February 1–September 30, 2021, mRNA vaccine effectiveness in preventing COVID-19–associated […]
Pfizer y BioNTech anunciaron hoy, miércoles, que los resultados de un estudio de laboratorio inicial demostraron que los anticuerpos inducidos por su vacuna contra el COVID-19 neutralizan los efectos de la variante ómicron después de tres dosis. Los sueros obtenidos de los vacunados un mes después de recibir la vacuna de refuerzo (tercera dosis de la vacuna BNT162b2) neutralizaron la variante ómicron a niveles […]
Vials of the Moderna (R) and Pfizer (L) COVID-19 vaccines.Hazem Bader/AFP via Getty Images Most people who’ve gotten booster shots in the US have stuck with the same brand of vaccine they had initially. But, it’s also fine to switch it up. Some early studies suggest that Moderna’s vaccine is […]
Seven different COVID-19 vaccines increase immunity when used as a booster for people who have had two doses of AstraZeneca/Oxford vaccine, and 6 vaccines provide immunity as boosters after 2 doses of Pfizer/BioNTech, a study has shown. However there were large variations in antibody and cellular immune responses between vaccines. […]
La tercera dosis de refuerzo que aplica la República Dominicana con el suero Pfizer, combinada con dos dosis de la vacuna de Sinovac. Es “segura” y “no produce eventos mayores”, según los resultados de un estudio sobre este particular presentado este jueves en el país. Esta tercera dosis amplía los […]
