WASHINGTON: People who received Johnson & Johnson's Covid-19 vaccine may benefit from a booster dose of Pfizer or Moderna, preliminary results of a US study published Wednesday showed. The study, funded by the National Institutes of Health (NIH), was eagerly awaited in the United States because it »»»

WASHINGTON: People who received Johnson & Johnson’s Covid-19 vaccine may benefit from a booster dose of Pfizer or Moderna, preliminary results of a US study published Wednesday showed. The study, funded by the National Institutes of Health (NIH), was eagerly awaited in the United States because it »»»

Soon after the US Food and Drug Administration gave full approval to the vaccine developed by Pfizer and BioNTech, in August, Defense Secretary Lloyd Austin mandated that all service members receive a COVID-19 jab. Just weeks away from a looming deadline to fully vaccinate its staff, the US Departm»»»