Q.1. What is the importance of this study?
Answer; According to the previous data, Angiostrongylus sp. was known to transmit by consuming the raw or improperly cooked land snails that containing infective larvae. The study indicated that houseflies can be a transport host of Angiostrongylus spp. Thus, humans may become infected with angiostrongyliasis without consuming infected, second intermediate hosts due to the houseflies. For prevention, community health education about the prevention of food contamination of flies is as important as proper sanitation and hygienic preparation practices.
Q.2. What is the transmission route of Angiostrongylus sp. (from this study)?
Answer; For transmission route, agent is Angiostrongylus sp., definitive and intermediate hosts are snails and slugs, and the houseflies are transport host.
For life cycle, the environment of the study area is a good habitat for definitive and intermediate host. Living area and the waste area are closed, and there is a poor practice on food waste disposal occurred. The houseflies fed on dead, infected snails and slugs, or slime of them. And also on the other paratenic hosts such as crabs and prawns. Then the houseflies rested on the floor and wall of the canteen and camp.And, rested and fed on the food.The people can be infected by eating this contaminated food. Poor waste disposal practice such as uncovered bin are the supporting factor for this condition.
3. What are the factors needed to successfully help the houseflies in the process of disease transmission?
Answer; The factors needed will be as follows- (1) the environment of the study area, houseflies can rest and fed on the slime and dead remains of snails and slugs which are abundance in this area. (2) Site plan of the area, canteen and kitchen are close to each other, (3) poor waste disposal practice, such as uncovered bins, and (4) poor food maintaining practices- such as food are not covered properly, and (5) poor food handling and preparation practices- utensils, and floors and walls are not clean properly.