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Florida Gov. Ron DeSantis (R) said Monday that cities and counties in the state could face millions of dollars in fines for requiring that their employees get vaccinated against the coronavirus, the latest escalation in Republican leaders’ opposition to public health mandates.

The governor has clashed with local leaders over masks in schools and is among a chorus of Republican governors denouncing or vowing action against President Biden’s sweeping order requiring businesses with more than 100 employees to require their workers to either be vaccinated or to be regularly tested for coronavirus.

Here’s what to know.

  • More than 660,000 people have died of the coronavirus, according to data tracked by The Washington Post.
  • President Biden plans to call on global leaders to make new commitments to fight the coronavirus pandemic, including fully vaccinating 70 percent of the world’s population by next September, according to a list of targets obtained by The Washington Post.
  • Fully vaccinated people in the general public don’t need coronavirus booster shots at this time, an international group of scientists says in a paper published Monday.
  • British health officials confirmed Monday night that all children ages 12 to 15 will be offered a single dose of a coronavirus vaccine in England, overturning earlier advice that found the jabs were only of “marginal” medical benefit for youths.
  • More than half of Americans say they support businesses requiring proof of vaccination to return to the office, according to a CNN poll published Monday.