I was in Egypt when "swine flu" was a thing. The Egyptians, in their infinite wisdom, decided that the solution was to slaughter all of the pigs in the country.

This led to a knock on effect of garbage piling up everywhere, because their waste disposal "system" up to that point had basically amounted to, "let the Copts gather the edible garbage to feed their pigs with." No pigs, no reason for the Copts to collect the garbage, hence, garbage piled up everywhere.