Study finds Pfizer vaccine is only 42% effective

A new study by the Mayo Clinic found the Pfizer vaccine was only 42% effective against infection in July in the clinic’s home state of Minnesota, when the delta variant became dominant. “If that’s not a wakeup call, I don’t know what is,” a senior Biden official told Axios. The study, conducted jointly with the … Continue reading Study finds Pfizer vaccine is only 42% effective