Indian flying fox and urinating in proximity to the pots. In this way, humans who drink the palm sap can be exposed to the bats' viruses. The use of bamboo skirts on collecting pots lowers the risk of contamination from bat fluids. While Indian flying foxes have also tested positive for GBV-D, a type of flavivirus, it is unclear whether this virus occurs in humans or if it could be transmitted by Indian flying foxes. To some, the Indian flying fox is vermin because they believe that it "poaches" ripe fruit from orchards. A study in India found that of all orchard crops,
Large flying fox only used temporarily. This species primarily feeds on flowers, nectar and fruit. When all three food items are available, flowers and nectar are preferred. The pollen, nectar, and flower of coconut and durian trees, as well as the fruits of rambutan, fig and langsat trees, are consumed. Flying foxes will also eat mangoes and bananas. With fruit, the flying fox prefers the pulp, and slices open the rind to get it. With durian tree flowers, the flying fox can lick up the nectar without doing apparent damage to the flower. Colonies of large flying foxes fly in a scattered stream.