Homeless individuals and abandoned dogs in Mexico City (CDMX) are identified as the most vulnerable to screwworm infestations. The parasitic fly, attracted to the scent of fresh wounds, lays eggs that develop into worms in both humans and animals, posing a significant health risk.

La mosca parásita que pone sus huevos en heridas frescas tiene un extraordinario olfato para detectar el olor a sangre y así provocar la presencia del gusano en humanos o animales