From Caribjournal.com:

Jamaica has shortened the required isolation period for US travelers who test positive while on the island.

The new rules stipulate that US travelers can exit isolation after five days, provided that the person is asymptomatic or has had mild symptoms that are resolving (as per the evaluation of a physician).

The isolation period begins the day after the positive test is taken; for travelers who remain symptomatic after five days, the 10-day quarantine period must be completed.

https://www.caribjournal.com/2022/01...lers-positive/