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 [...]
F.D.A. Attaches Warning of Rare Nerve Syndrome to Johnson & Johnson Covid Vaccine
Federal regulators concluded that the risk of developing the syndrome [...]
With the Delta Variant, Do I Need a Covid Booster Shot?
Although studies of a third dose are underway, experts agree [...]
¿Te preocupa la variante Delta? Las investigaciones muestran que las vacunas son eficaces contra ella
Israel informó que la vacuna de Pfizer tenía una efectividad [...]