Boosters take off

• "The question that’s on everyone’s mind — and studies are underway is — is there a role for booster vaccines to augment waning immunity" for everyone else?
• NIH Director Francis Collins told Fox News' Chris Wallace on Sunday the Biden administration is looking closely at that question about boosters for the broader U.S. population, but there isn't enough data yet.
• But he did say concern the vaccine may start to wane in its effectiveness over months "may mean we need to begin with health care providers as well as people who are in nursing homes" in the next few months.
• Stephen Hoge, president of Moderna, told Fox News' Maria Bartiromo on Sunday that breakthrough cases are emerging differently across vaccines as a result of the Delta variant after six to nine months. "I think that suggests we are going to need booster vaccines to get through the winter."

Officials made a distinction between a third shot for those who are immunocompromised and a "booster" dose that addresses waning immunity in healthy individuals.

• The third shot is aimed at those undergoing active or recent cancer treatments, those who've received a solid organ transplant, or have advanced HIV infection. It may also include those undergoing treatment with high-dose corticosteroids, alkylating agents, antimetabolites or tumor-necrosis (TNF) blockers, and certain chronic conditions such as renal disease.
• They're estimated to comprise 2.7% of U.S. adults, or about 7 million adults.

What we're watching: If it turns out we all need boosters, it raises some complex questions. For instance, who will be first in line? Will individuals be required to get the same brand of shot they got in their first series and, if so, how will they get it?

• "We're looking at it on a daily and weekly basis in cohorts not only in the United States, but in other countries to determine if, when and to whom we should be giving this," NIAID Director Anthony Fauci told CBS News over the weekend.

• The first boosters would likely be prioritized for those vaccinated early in the rollout of the COVID-19 vaccinations including nursing home residents, those 65 years and older and health care personnel, according to CDC materials distributed Friday.
• "So if it turns out as the data come in, we see we do need to give an additional dose to people in nursing homes, actually, or people who are elderly, we will be absolutely prepared to do that very quickly."

But, but, but: The CDC workgroup said the greatest health impact will continue to come from the primary series of the vaccine. Decisions for boosters need to focus on the prevention of hospitalization and death, including ensuring global vaccine availability.

• "What really matters for a vaccine is preventing symptomatic disease, hospitalization and death. And the currently approved vaccines in the U.S. do that very, very well," Badley said.