Heartworm Prevention: Why Your Dog Needs Year-Round Protection

Heartworm disease is a serious health concern for dogs, especially in warmer climates like San Antonio, TX, where mosquitoes can remain active throughout much of the year. Even dogs that spend most of their time indoors can be exposed to infected mosquitoes. At MPC of Texas, we emphasize the importance of year-round heartworm prevention to protect dogs from a potentially life-threatening disease.

Understanding how heartworms spread and why consistent protection matters can help you keep your dog healthy.

What Is Heartworm Disease?

Heartworm disease is caused by parasitic worms called Dirofilaria immitis, which are transmitted through the bite of an infected mosquito. Once inside a dog, the larvae develop into adult worms that live in the heart, lungs, and surrounding blood vessels.

Over time, heartworms can cause significant damage to the heart and lungs. If left untreated, the disease can lead to heart failure and other serious complications.

One challenge with heartworm disease is that infected dogs may not show symptoms during the early stages. This makes routine testing and preventive medication essential.

Why Year-Round Heartworm Prevention Matters in San Antonio

San Antonio's generally warm climate creates favorable conditions for mosquitoes. Although mosquito activity may decrease during colder months, it doesn't disappear completely.

Skipping heartworm prevention during the winter can leave your dog vulnerable to infection. Because heartworm larvae take several months to mature, an infection may go unnoticed until significant damage has occurred.

At MPC of Texas, we recommend maintaining a consistent prevention schedule throughout the year rather than relying on seasonal protection.

Signs of Heartworm Disease in Dogs

Heartworm disease can progress gradually, and symptoms often become more noticeable as the infection advances.

Common warning signs include:

• Persistent coughing, particularly after exercise

• Fatigue or reduced interest in physical activity

• Difficulty breathing or shortness of breath

• Decreased appetite and unexplained weight loss

• Swollen abdomen in advanced cases

These symptoms can also indicate other medical conditions. If your dog develops any of these signs, a veterinary evaluation is important.

How Heartworm Prevention Protects Your Dog

Heartworm preventives work by eliminating susceptible immature heartworm larvae before they develop into adult worms. Preventive medications are available in several forms, including monthly oral medications, topical treatments, and longer-lasting injections.

The appropriate option depends on your dog's age, weight, health history, and individual needs.

Prevention is significantly safer, simpler, and generally less expensive than treating an established heartworm infection. Treatment for adult heartworms can involve multiple medications, strict exercise restrictions, and an extended recovery period.

The Importance of Regular Heartworm Testing

Even dogs receiving preventive medication should undergo routine heartworm testing. Missed doses, delayed administration, or improper use can increase the risk of infection.

Annual heartworm testing is generally recommended for dogs, although additional testing may be necessary if prevention has been interrupted.

At MPC of Texas, we provide heartworm testing and preventive care to help San Antonio dog owners stay proactive about their pets' health. Our veterinary team can help determine an appropriate prevention schedule and explain when testing is needed before starting or restarting medication.

Keep Your Dog Protected With MPC of Texas

Protecting your dog from heartworm disease starts with consistent preventive care. At MPC of Texas, we offer affordable veterinary preventive services to help pet owners protect their dogs throughout the year.

For heartworm testing and prevention in San Antonio, TX, contact MPC of Texas by calling (210) 690-3799 to learn more about our veterinary services and mobile clinic locations.