Your dog is full of energy, ready for walks, dog parks, and backyard playtime. But in Houston’s warm, mosquito-heavy climate, even the healthiest pet can be silently exposed to heartworm disease. Many pet parents want to stay on top of preventive care but worry about cost, time, or the stress their pets feel during traditional vet visits.
CityVAX was created for exactly those families. We bring affordable, walk-in preventive care to convenient pop-up clinic locations across the greater Houston area. No appointment, no complicated scheduling, and no surprise add-ons. Just the essential services your dog or cat needs to stay protected, offered at trusted neighborhood venues you already know.
From low-cost pet vaccinations and parasite prevention to microchipping and heartworm testing, CityVAX focuses on preventive care only. If your pet needs services beyond prevention, we’ll refer you to a full-service veterinary clinic so you can get the care that fits your pet’s needs.
Heartworm disease is spread by mosquitoes, which are common throughout Houston, Pearland, Missouri City, and surrounding communities most months of the year. A single mosquito bite can transmit microscopic heartworm larvae into your dog’s bloodstream. Over time, these larvae can grow into long worms that live in the heart and lungs and can cause severe, sometimes fatal, disease.
The challenge is that early heartworm infection often has no obvious symptoms. Dogs may seem completely normal while the disease slowly progresses. That is why regular heartworm testing is such an important part of preventive care, especially in Gulf Coast regions where mosquitoes thrive.
At a CityVAX pop-up clinic, heartworm testing is quick and straightforward. A small blood sample is taken from your dog, usually from a leg or the neck area. This sample is used to run a rapid test that checks for signs of heartworm infection.
The process typically takes just a few minutes, and most dogs tolerate it very well. Our team focuses on keeping the experience calm and efficient, which can be especially helpful for nervous or wiggly pets. Because we specialize in preventive services, your visit is streamlined around exactly what your dog needs that day.
Most dogs should have a heartworm test at least once a year, even if they are on preventive medication. Annual testing helps confirm that the prevention is working and that your pet has not been exposed in the past year. Dogs starting heartworm prevention for the first time, or those who have missed doses, may need testing before restarting or adjusting their preventive plan.
CityVAX can help you stay on track with routine heartworm testing as part of your pet’s overall preventive care. Because our clinics are walk-in and held regularly at multiple neighborhood locations, it is easier to keep up with yearly testing without rearranging your entire schedule.
If your dog’s heartworm test is positive, it means that further evaluation and treatment are needed through a full-service veterinary clinic. CityVAX does not perform heartworm treatment or general medical workups. Instead, our team will explain your pet’s test result, answer basic questions about what it means, and refer you to a full-service veterinarian who can provide the comprehensive care and follow-up your dog requires.
This clear division of services helps keep CityVAX focused on what we do best: preventive care such as heartworm testing, low-cost vaccinations, parasite prevention, and microchipping. When your pet needs more advanced care, we help connect you with the right kind of clinic.
Many families choose to combine heartworm testing with other essential services during a single visit. At most CityVAX pop-up clinics, you can also access:
• Dog and cat vaccinations, including core vaccines that protect against serious diseases such as rabies, distemper, and parvovirus
• Parasite prevention and control products for fleas, ticks, and intestinal parasites
• Microchipping to help your pet find their way home if they ever get lost
For a full list of services, you can explore the CityVAX preventive care services overview. All services are offered on a walk-in basis during posted clinic hours.
Life in the Houston area is busy, and pets are family. CityVAX pop-up clinics are designed to fit into your day with minimal disruption. There is no need to call ahead or find an appointment slot weeks in advance. You can stop by during the clinic’s open hours when it works best for you.
Because we focus only on preventive care, visits are usually faster and more streamlined than a traditional veterinary appointment. Our team concentrates on vaccinations, parasite prevention, heartworm testing, and microchipping so your pet can get what they need and get back home comfortably.
CityVAX clinics are hosted at familiar community locations such as pet resorts, pet boarding facilities, and other neighborhood venues. Many pets feel more relaxed in these settings compared to a busy hospital environment. The community-based model also helps keep costs low, which allows us to offer more affordable pricing on preventive services without cutting corners on quality.
CityVAX is on the move across the greater Houston area with walk-in pop-up clinics in Pearland and Missouri City this week. No appointment needed — walk-ins welcome during the times listed below.
Pearland Location
PetSuites-Pearland (INDOORS)
3205 Kirby Dr.
Pearland, TX 77584
Date: Wednesday, October 29, 2026
Time: 12:00 PM – 4:00 PM
Missouri City Location
Fondren 5 Star Pet Resort
14420 Fondren Rd.
Missouri City, TX 77489
Date: Friday, October 31, 2026
Time: 9:00 AM – 4:00 PM
Pearland Location (INDOORS)
PetSuites-Pearland
3205 Kirby Dr.
Pearland, TX 77584
Date: Friday, October 31, 2026
Time: 10:00 AM – 3:00 PM
Each pop-up runs only during the time window listed for that location. All services are first come, first served, and all clinics are walk-in only.
Bringing your pet to a CityVAX clinic is simple. If you have any previous vaccination records, bring a copy so our team can make the best recommendations for your pet’s preventive care. Dogs should be on a leash and under control, and cats should be in a secure carrier.
For the latest schedule and additional Houston-area locations, visit the CityVAX schedule and locations page. You can also call (832) 281-0559 if you have questions about services offered at a specific pop-up clinic. If your pet has an existing medical condition or needs care outside of vaccinations, parasite prevention, heartworm testing, or microchipping, we recommend seeing a full-service veterinary clinic for a complete evaluation.
