Number of Americans fully vaccinated tops 100 million

Disneyland reopened on Friday and cruise lines welcomed the news that they could be sailing again in the U.S. by midsummer, as the number of Americans fully vaccinated against COVID-19 reached another milestone: 100 million.

Visitors cheered and screamed with delight as the Southern California theme park swung open its gates for the first time in 13 months in a powerful symbol of the U.S. rebound, even though the self-proclaimed Happiest Place on Earth is allowing only in-state guests for now and operating at just 25% capacity.

The reopening and...