Tag Archives: mRNA

However, a booster dose will be necessary prior to the winter season as antibody levels are likely to wane, Moderna said. Moderna said on Thursday its Covid-19 shot was about 93 percent effective through six months after the second dose, showing hardly any change from the 94 percent efficacy reported …

Countries should also avoid giving the Astrazeneca coronavirus vaccine to people over 60, the head of the EU drug regulator’s COVID-19 task force was quoted on Sunday as saying, amid fears over rare blood clotting and as more vaccines become available. The European Medicines Agency (EMA) considers the Astrazeneca shot …

Pfizer Inc said on Tuesday it will begin testing its COVID-19 vaccine in a bigger group of children under age 12 after selecting a lower dose of the shot in an earlier stage of the trial. The study will enroll up to 4,500 children at more than 90 clinical sites …