Jamaica should really be accepting American Negative Covid19 Certificates for entry like the Bahamas(within 10 days of entry) and Antigua are doing.
It would give peace of mind to older visitors if they can do this ahead of time versus them stressing like the St Ann lady did last Tuesday that had a heart attack in the long immigration line waiting to take the Covid19 test.
It would overall speed up the process at the Jamaica airport and save the cost of doing so many Jamaica Covid19 test.
Sure you can argue a visitor could be infected after the American Covid19 test but studies show that it's slim to no chance in most cases if the traveler avoids no close contacts and closed places after they test.