By Lauren Gardner

A flurry of regulatory, testing and logistical issues is complicating the rollout.

A flurry of regulatory, testing and logistical issues is complicating the rollout.

Two senators on the panel who caucus with Democrats and six Republicans opposed the nomination.

Two senators on the panel who caucus with Democrats and six Republicans opposed the nomination.

Two senators on the panel who caucus with Democrats and six Republicans opposed the nomination.

Two senators on the panel who caucus with Democrats and six Republicans opposed the nomination.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The advisory panel signed off on the recommendation following presentations by doctors suggesting boosters are likely to increase antibodies in young teens.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

The agency will also allow some immunocompromised children as young as age 5 to get an additional dose.

CDC Director Rochelle Walensky’s decision came hours after the agency’s vaccine advisory committee voted unanimously to update the recommendation.

CDC Director Rochelle Walensky’s decision came hours after the agency’s vaccine advisory committee voted unanimously to update the recommendation.

CDC Director Rochelle Walensky’s decision came hours after the agency’s vaccine advisory committee voted unanimously to update the recommendation.

Eligible teens will be able to get the shot once they are at least six months past their second dose.

Eligible teens will be able to get the shot once they are at least six months past their second dose.

Eligible teens will be able to get the shot once they are at least six months past their second dose.

Eligible teens will be able to get the shot once they are at least six months past their second dose.

Eligible teens will be able to get the shot once they are at least six months past their second dose.

Regulators are considering whether to authorize the pill’s emergency use in adults who have been experiencing symptoms for less than five days and, if so, how to define who’s considered high risk.

Regulators are considering whether to authorize the pill’s emergency use in adults who have been experiencing symptoms for less than five days and, if so, how to define who’s considered high risk.

Her endorsement came just hours after CDC’s external advisory committee unanimously backed the approach.