Pfizer produces much stronger protection if doses months apart: study
Fox News
A study in the United Kingdom led by the University of Birmingham in collaboration with Public Health England reported that waiting months between doses of the Pfizer/BioNTech vaccine produces much stronger protection against COVID-19.
Dr. Helen Parry, a senior author on the study at Birmingham, said: "We’ve shown that peak antibody responses after the second Pfizer vaccination are really strongly boosted in older people when this is delayed to 11 to 12 weeks. There is a marked difference between these two schedules in terms of antibody responses we see." Britain has a policy of delaying the second dose by up to 12 weeks to free up vaccines for more people. Britain announced Sunday that more than 20 million people have now received both doses. The two shots of the Pfizer vaccines were intended to be given three to four weeks apart. The study found that antibodies were three-and-a-half times higher when given after 12 weeks.More Related News