Some fear boosters will hurt drive to reach the unvaccinated

NEW YORK (AP) — The spread of COVID-19 vaccination requirements across the U.S. hasn't had the desired effect so far, with the number of Americans getting their first shots plunging in recent weeks. And some experts worry that the move to dispense boosters could just make matters worse.

The fear is that the rollout of booster shots will lead some people to question the effectiveness of the vaccine in the first place.

“Many of my patients are already saying, ‘If we need a third dose, what was the point?’” said Dr. Jason Goldman, a physician in Coral Springs, Florida.

The average daily count of Americans getting a first dose of vaccine has been falling for six weeks, plummeting more than 50% from about 480,000 in early August to under 230,000 by the middle of last week, according to the most recently available federal data.

An estimated 70 million vaccine-eligible Americans have yet to start vaccinations, despite a summer surge in infections, hospitalizations and deaths driven by the delta variant.

This is the case despite a growing number of businesses announcing vaccination requirements for their employees, including Google, McDonald's, Microsoft and Disney. Also, big cities such as New York and San Francisco are demanding people be vaccinated to eat at restaurants or enter certain other businesses.

Separately, President Joe Biden announced sweeping new vaccine requirements for as many as 100 million Americans on Sept. 9. Employees at businesses with more than 100 people on the payroll will have to get vaccinated or undergo weekly testing. But the mandates have yet to go into effect; the necessary regulations are still being drawn up.

While some workers have gotten the vaccine under pressure from their employers, many holdouts remain.

Experts have long said the key...