The recommendation is that the third shot be administered at least 28 days after completion of the primary two-dose series. Vanderhoff said people should consult their physician to determine whether they should receive the vaccine booster.
An additional shot is not recommended for those who received the single-dose Johnson & Johnson vaccine.
Data does not suggest that a booster would be necessary for others, he said, despite the surge in COVID-19 cases amid the emergence of the delta variant, which Vanderhoff said is primarily affecting those who did not receive any vaccine doses.
“It is spreading like wildfire among the unvaccinated,” Vanderhoff said.
For those with conditions that make them immunocompromised, their primary series should probably be a three-dose series, and for the rest of the population the two-dose Moderna and Pfizer and one-dose J&J series are more than adequate, he said.
“We would strongly discourage people who do not fall into this narrow category from getting an additional dose for the simple reason that the data don’t suggest it’s necessary,” Vanderhoff said.