The battle with the mosquito known for spreading the killer Dengue fever is continuing with no end in sight.

And the Ministry of Health has warned that if just one resident returning home or a visitor is suffering from the debilitating disease and gets bitten by an Aedes aegypti mosquito, the disease could spread rapidly throughout the Island.

Last winter a ministry task force, led by environmental health officer David Kendall issued a warning to residents to empty all sources of standing water on their property.

And with the mosquito's breeding season now in full gear, the hot and dry conditions are making the situation more dangerous.

"The last two weeks have been very busy,'' Mr. Kendall said. "We have uncovered 25 breeding sites in Ord Road, Spring Hill, Cedar Hill, Hillview, and Tamrind Vale, Warwick, and Riviera Estate, Southampton.'' Mr. Kendall said residents should empty buckets, barrels, and galvanised tanks at construction sites and around their homes to deny the mosquito a place to lay their larvae.

"Even with only a half-inch of water they'll breed and lay the larvae. In some cases that has been enough,'' Mr. Kendall said.

And he warned residents who see mosquitoes with white bands on their bodies or who have numerous bites to their ankles to contact the Health Ministry so their neighbourhood could be searched.

Symptoms of Dengue Fever inlcude a measles type rash on the upper body, severe headaches behind the eyes, aching joints, and high fevers. The mosquito does not make noise as it flies.

The mosquito and the disease were wiped out in the Island in the 1940's after a massive effort by Government, residents, and visiting military forces.