canacona four dengue cases were detected in different parts of canacona this month said health officer dr sneha amonkar adding that the patients were cured but precautions have been taken to contain any possible spread of the disease during rains sanitary inspector pranay naik said they inspect residential areas to detect mosquito breeding spots and if found sanitisation measures are taken we even conducted house to house visits in areas suspected to have breeding of dengue mosquitoes he said people have been advised to ensure that there is no breeding of mosquitoes in discarded plastic or other types of containers in their vicinity if vessels used to store water naik said they have to be covered and washed once a week before refilling