On Monday, the pharmacological company announced that its AZD1222 vaccine for Covid-19, which is based on a common cold virus that causes infection in chimpanzees, has an efficacy of 70 percent. The number is average for two slightly different tests. One involved people, who received half a dose of the …
Read More »Puzzling higher AstraZeneca vaccine efficacy for smaller dosage explained: It was reportedly tested on people only under 56
