Five Human Cases of New World Screwworm Confirmed in Mexico State

Mexico State has confirmed five cases of New World screwworm infection in humans, a parasitic condition affecting livestock. Health authorities reported that three of these cases were registered in the municipality of Tejupilco, located in the southern part of the state.

An additional two cases were identified as imported, originating from the states of Veracruz and Guerrero. Gioberti Noel Mateos Toledo, head of the Health Services Directorate, stated that none of the affected individuals have required hospitalization. The cases were found among the economically active population, with an average age of 45 years.

The New World screwworm is caused by the larvae of the fly Cochliomyia hominivorax. This parasite feeds on living tissue and primarily affects cattle. Transmission to humans occurs when the fly lays its eggs on open wounds, skin lesions, or body cavities such as the nose, mouth, and ears. Factors that increase the risk for humans include pre-existing skin conditions like neoplasms or ulcers, and neglected chronic illnesses such as kidney failure, diabetes, or senile dementia.

In related health news, the State of Mexico's health sector is also addressing dengue fever. From June 1 to 5, a health promotion week focused on sanitary emergencies provided 9,730 orientations. Officials noted that out of 8,000 residual chlorine monitoring points, 90% have adequate chlorine levels, while 10% do not, often due to community resistance to chlorination based on "uses and customs."