Pfizer Vaccine Protection Wanes, C.D.C. Study Shows
The study found that the shots’ effectiveness in preventing hospitalization [...]
Study of Covid Booster Shot Benefits Fans Debate Over Extra Doses
Independent experts, including government scientists, were skeptical of the research [...]
¿La vacuna Johnson & Johnson requerirá refuerzo?
Tenemos una guía con las recomendaciones y opiniones de los [...]
Covid Vaccines Produced in Africa Are Being Exported to Europe
Johnson & Johnson is sending shots from South Africa to [...]
F.D.A. Aims to Give Final Approval to Pfizer Vaccine by Early Next Month
The Food and Drug Administration’s move is expected to kick [...]
Some Are Chasing Extra Vaccine Shots, While Scientists Debate
Boosters may not be necessary yet, many experts say, and [...]
Vaccine Makers Are Asked to Expand Safety Studies on Children
The F.D.A. wants Pfizer and Moderna to increase the number [...]
Johnson & Johnson podría ser menos eficaz contra la variante delta
Muchos de los que recibieron la vacuna pueden necesitar refuerzos, [...]
J.&J. Vaccine May Be Less Effective Against Delta, Study Suggests
Many who received the shot may need to consider boosters, [...]
U.S. Officials Press Pfizer for More Evidence of Need for Booster Shot
After meeting with company representatives, officials said the decision would [...]