The number of Escherichia coli on several flies from residential and landfill areas: Drosophila is the least!

Flies are vectors of disease because flies can transfer bacteria from dirty places to food or the human body. This
study aimed to determine the differences in the number of Escherichia coli carried by different flies from different locations
(residential and landfill areas). This study involved three types of flies, i.e., Musca domestica, Chrysomya megacephala, and
Drosophila sp. Catching flies was carried out at 02.00 to 05.00 pm for four times a week. Calculation of E. coli number using
the colony counter and two-way ANOVA was chosen to analyze the data. As a result, the type of fly had a significant effect
on E. coli number (p < 0.001), while differences in location did not give a significant effect (p = 0.533). The location and the
type of fly also did not show a significant interaction (p = 0.816). Interestingly, Drosophila is the type of fly that carries the
least amount of E. coli compared to the other two types of flies.