The fall COVID-19 vaccine season is starting slowly for Pfizer, with U.S. sales of its Comirnaty shots sinking 25% after federal regulators narrowed recommendations on who should get them.

Approval of updated shots also came several weeks later than usual, and Pfizer said Tuesday that hurt sales as well.

Many Americans get vaccinations in the fall, to protect against any disease surges in the coming winter. Experts say interest in COVID-19 shots has been declining, and that trend could pick up this fall due to anti-vaccine sentiment and confusion about whether the shots are necessary.

The Centers for Disease Control and Prevention last month stopped recommending COVID-19 shots for anyone, instead leaving the choice up to patients. The government agency said it was adopting recommendatio

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