The Centers for Disease Control and Prevention (CDC) on Feb. 4 outlined an expected change to the COVID-19 vaccine schedule for people with weak immune systems and signaled that a different alteration is coming for the general population to try to cut the number of post-vaccination heart inflammation cases.
The CDC told its vaccine advisory panel that it’s planning to adjust guidance for people with compromised immune systems, a group that doesn’t respond as well to vaccines as the general population and is the only population that is advised to get four doses of the Moderna or Pfizer messenger RNA (mRNA) vaccines.
Current CDC guidance for the immunocompromised says they should receive three doses of an mRNA vaccine within two months, and a fourth dose at least five months after the third dose.
The revised schedule would recommend the population get that fourth shot as soon as three months after their third one.
For recipients in the population who received the single-shot Johnson & Johnson COVID-19 vaccine, the updated guidance says they should get a second dose at least 28 days after their vaccination, and a third dose as soon as two months later.
Read More: CDC Signals Changes to COVID-19 Vaccine Schedule, in Part to Address Heart Inflammation