The Public Health Department is reportedly keeping a close watch on the Sandy Bank Primary School in St Elizabeth following the outbreak of an unknown illness at the institution. Floyd Green, the Jamaica Labour Party caretaker for the South West St Elizabeth, in which the school falls, has claimed that more than 100 students came down with a mysterious flu like illness recently. Director of communications in the education ministry, Byron Buckley, told The Gleaner/Power 106 News Centre that most of the students who were ill have returned to school. He said that up to yesterday, 186 of the approximately 227 students at the school were present. Buckley said the health department has ruled out malaria while tests for other diseases are being carried out to determine the cause of the reported illness. Buckley says the school was disinfected over the weekend and has a 94 per cent sanitary grade. An official from the school told our news centre that the health department has been visiting the school daily. Meanwhile, the JLP caretaker has called for the health ministry to address the community on the issue to quell fears.