The fourth positive case, is a 19-year-old from Clarendon, who is under investigation.
Jamaica now has 31 imported cases of COVID-19; 25 imported-related cases and 13 cases under investigation, the ministry says. The 13 who are being investigated have been traced to six people with no travel history or contact with confirmed cases.
One of the six is from Portland, who has had contact with two positive cases, the ministry says. Another is from the Corporate Area with five contacts who have tested positive. One each are from Clarendon and St Mary and two from St Catherine. All six are in isolation.
The ministry says so far 54 percent of those confirmed with the disease are males.
Thirteen have fully recovered and four have died.