Source: CNN

The New World screwworm, a flesh-eating parasite once eradicated from North and Central America, has recently reemerged and spread into parts of Mexico and the southern United States. Experts believe its resurgence has been accelerated by illegal cattle trafficking, which allows infected animals to cross borders without proper health inspections and disease-control measures.
The parasite poses a serious threat to livestock, wildlife, pets, and occasionally humans because its larvae feed on living tissue, causing painful and potentially life-threatening wounds. Agricultural and animal health officials are responding with sterile fly release programs, a proven strategy that successfully eliminated the pest in previous decades. However, experts warn that long-term success will depend on stronger international cooperation, improved biosecurity measures, and efforts to curb illegal livestock movements.
The outbreak has raised concerns about animal health, food production, and economic losses throughout the livestock industry. Without continued vigilance and coordinated control efforts, there is concern that the screwworm could expand into additional regions and create significant challenges for producers, veterinarians, and animal health authorities.