The Ministry of Education has confirmed one more case and two suspected cases of Hand-Foot-and-Mouth Disease at the Port Antonio Infant School in Portland.
An outbreak of the highly contagious disease has affected children in several schools across the island.
At least two infant schools in St. Catherine have been ordered closed, due to the outbreak of the disease.
Deputy Chief Education Officer, Dorrett Campbell, says sterilization activities are underway at the affected schools in order to limit the spread of the disease.
In the meantime the Ministry is again advising parents not to send children to schools, nurseries or day care centres when they are experiencing symptoms of the disease.
Parents are asked to be on the lookout for the common symptoms including fever, loss of appetite, painful sores in the mouth and sore throat, along with blisters and rashes on the hands and feet.