Dissemination of Enterobacteriaceae to Human Beings Through Houseflies in Different Areas of Lahore City

Acute gastroenteritis is probably the most important public health problem. The association of flies as mechanical vectors in transmission of the causative agent is evident due to their behavioural characteristics which ensure their contact with food and wastes of man and animals. The present study was of six months duration from 1 st June, 2008 to 30 th November, 2008, 7200 flies were used for bacteriological examination from six sanitary and six insanitary areas of Lahore city. This study revealed that bacterial contamination of houseflies varied with the site of its breeding. Overall frequency of orofaecal transmitting bacteria was higher in the insanitary areas whereas in the sanitary areas bacterial isolates were more of non-orofaecal transmitting group. It has become evident from this study that sanitary conditions should be improved to minimize the breeding of house-flies in Lahore.