Study: Pfizer Vaccine Protects Against Hospitalization for Six Months
The findings, which also document a waning of protection against [...]
Pfizer Vaccine Protection Wanes, C.D.C. Study Shows
The study found that the shots’ effectiveness in preventing hospitalization [...]
Johnson & Johnson podría ser menos eficaz contra la variante delta
Muchos de los que recibieron la vacuna pueden necesitar refuerzos, [...]
Headache Research Advances Though Cures Are Elusive
Research into these often mysterious and debilitating disorders has languished. [...]
J.&J. Vaccine May Be Less Effective Against Delta, Study Suggests
Many who received the shot may need to consider boosters, [...]
How an Unproven Alzheimer’s Drug Got Approved
Though some of its own senior officials said there was [...]