If you are immunocompromised: Anyone 5 years and older who is moderately or severely immunocompromised should get an additional primary shot or third dose 28 days after the second shot.
Pfizer and BioNTech said previously that data from their Phase 3 trial showed high levels of protection against COVID six months after second doses.
Among Moderna vaccine recipients who had at least 28 days of follow-up, 98% received a second dose, 92% within 31 days and 97% by 35 days.
Interestingly, the Moderna vaccine showed no decline in effectiveness over that period of time.
Moderna's vaccine can be stored in a normal freezer, while AstraZeneca's can be stored in a regular refrigerator.
An employee with the McKesson Corp.