Effective Screwworm Treatment for Dogs and Cats: What You Need to Know

Screwworm Myiasis in Pets: Symptoms, Diagnosis, and Veterinary Care

Reading time : 1 minute, Discovery Chepe Id-752-ECO
Published in 06-16-2025

The Cochliomyia hominivorax, commonly known as the screwworm, is a parasitic fly whose larvae can cause severe infections in pets. Although this pest is more common in tropical and subtropical regions, cases have been reported in various parts of the world, and early detection is key to saving your pet's life.

What is the screwworm?
The screwworm is a type of fly that lays its eggs on open wounds or mucous membranes of warm-blooded animals. Once the larvae hatch, they feed on living tissue, leading to deep and painful lesions that can quickly worsen if not treated promptly.

How do pets get infected?
Pets can become infected when they have open wounds, even small scratches or insect bites. The female screwworm fly is attracted to these areas and deposits her eggs there. Once the larvae emerge, they burrow into the flesh, causing significant damage.

Understanding Screwworms: A Threat to Pet Health and How to Combat It

Symptoms of screwworm infection
Identifying the signs of a screwworm infestation early can make the difference between a quick recovery and a life-threatening situation. Among the most common symptoms are:
1- Foul-smelling discharge from the wound
2- Visible maggots in or around the lesion
3- Swelling and redness that get progressively worse
4- Signs of pain when touching the area
5- Loss of appetite and lethargy in the animal

Prevention tips
a) Regularly check your pet for any wounds, especially after outdoor activities.
b) Keep your pet's living area clean and free of waste that might attract flies.
c) Use repellents recommended by your veterinarian, particularly in high-risk areas.
d) Promptly clean and treat wounds to reduce the risk of egg-laying by flies.

Effective treatment options
If you suspect your pet has a screwworm infestation, it is vital to act immediately:
1- Contact your veterinarian: Do not attempt to remove the larvae on your own, as improper handling can make the situation worse.
2- Veterinary intervention: The professional will clean the wound thoroughly, remove all larvae, and prescribe medications such as antibiotics and anti-parasitics.
3- Follow-up care: Your pet may require additional wound care and follow-up visits to ensure complete healing.

Why early action matters
Screwworm infections can spread rapidly and cause extensive tissue damage. In severe cases, they can even be fatal. Early detection and treatment are crucial for a positive outcome.

Learn more
For more detailed information about screwworms and how to protect your pet, visit this reliable source: USDA Screwworm Information.

Taking care of your pet means staying informed and vigilant. The screwworm may be a hidden threat, but with knowledge and quick action, you can protect your beloved companion from this dangerous parasite.