Larva

A veterinarian finds a strange parasite in a cow and sends it to a friend for research. Later, he finds the same parasite in a creek and warns the population that the cause might be the animal food. However, the wealthy owner of Host Tender Meals discredits him. When a huge mutant parasite attacks him and a farmer, they discover that the meals are actually an experimental genetic cocktail that is growing parasites inside the cattle and people.