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Pfizer CEO Albert Bourla says the third dose is effective, but it doesn't last very long.

Pfizer CEO Albert Bourla says the third dose is effective, but it doesn't last very long.

All the confusion over variants, booster shots and vaccine passports will make it harder for tourists, businesses and would-be emigrants.

Florida has entered a peak of COVID-19 cases not seen since January’s surge as the state reported 16,038 new cases Tuesday to the federal government, the seventh consecutive day the state has reported more than 12,000 new daily cases.