British Man Died of Rare Blood Syndrome Linked to AstraZeneca’s Vaccine
One expert said the blood-clotting syndrome was estimated to occur [...]
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, [...]