Eosinophilic myositis is a condition in which the affected muscles become infiltrated with eosinophiles. The exact etiology of this condition is not known, and while it has often been associated with parasitisms or allergic reactions, such a relationship has not been proven conclusively. The affected muscles constitute a meat inspection problem as they must be trimmed from the carcass, but the remaining tissues are edible.

Guatemala is the Central American country nearest the United States. It is bounded on the north and west by mexico, on the southeast by Honduras and El Salvador. It has a seventy mile Atlantic coast line and a two hundred mile Pacific coast line. The national territory comprises 42,000 square miles, not including the 8,605 of Belice (British Honduras) claimed by Guatemala.