Is There a Quarantine for Pets Entering the USA?
There is no mandatory general quarantine for pets entering the United States from most countries. But that doesn't mean entry is simple. The CDC, USDA, and APHIS each regulate different aspects of animal entry, and requirements vary significantly by country of origin, species, vaccination status, and destination state.
Requirements for Dogs: The Full Picture
In 2024, the CDC restructured rules for dog entry into the USA. The requirements are now tiered by country of origin:
Dogs from "high-risk" rabies countries (includes most of Latin America, Eastern Europe, Africa, and Asia):
- ISO 11784/11785 microchip: mandatory. If your dog has a non-standard chip, you must bring your own reader.
- Rabies vaccine: must have been administered in the USA, or at an approved overseas laboratory. This is the most complex requirement — it means that a vaccine given in Argentina or Colombia, even by a licensed vet, may not satisfy CDC requirements unless the lab is on the CDC-approved list.
- Health certificate: issued by an accredited veterinarian within 10 days prior to travel.
- Screwworm treatment: for dogs from countries where Cochliomyia hominivorax (screwworm) is endemic, preventive treatment and official certification are required.
Dogs from "low-risk" countries (US, Canada, most of Western Europe): microchip, health certificate, and documentation of a valid rabies vaccine. The process is considerably more straightforward.
Requirements for Cats
Cats entering the USA face fewer federal requirements. There are no federal rabies vaccine mandates for cats at the national level, although some states have their own rules. A health certificate is required, and microchipping is strongly recommended even when not technically mandatory — it's your best protection if the animal is separated from its documentation.
Hawaii: A Special Case
If your destination is Hawaii, the rules are entirely different from the rest of the United States. Hawaii has a rigorous pet entry program to protect its rabies-free status:
- Rabies titer test (FAVN) performed at an approved laboratory — results must meet a minimum antibody level
- Minimum waiting period of 90 days after the qualifying titer test
- Two rabies vaccinations at least 30 days apart
- 5-day-or-less quarantine facility option (if all requirements are met in advance) or up to 120 days of quarantine
Hawaii should be treated as a completely separate import scenario from the continental USA.
Step-by-Step Timeline
- 6+ months before: consult with an international pet transport specialist to verify requirements for your specific country of origin. Some steps (titer tests, approved vaccinations) have mandatory waiting periods.
- 4–5 months before: microchip implantation if not already done. Rabies vaccine must be given after microchipping to be valid.
- 3 months before: administer vaccines, including rabies at an approved lab if required. Wait periods for titers begin here.
- 4–6 weeks before: book the flight and notify the airline about your pet. Reserve space — pet quotas per flight are limited.
- 10 days before: issue the health certificate. It cannot be issued earlier than this window.
- Day of travel: final crate verification, check-in, customs coordination.
What Happens If Requirements Aren't Met
If documentation is incomplete or requirements aren't satisfied at the US port of entry, the animal can be detained, require veterinary inspection at your cost, or in some cases be returned to the country of origin. These outcomes are expensive, distressing for the animal, and entirely avoidable with proper preparation.
Requirements also change. What was valid last year may not satisfy this year's CDC update. At Pet Cargo we stay current with CDC and USDA regulations so every relocation arrives clean.
Why Work With a Specialist
The process looks straightforward on paper until you're 3 weeks from your flight and discover that the vaccine your vet administered isn't from an approved lab — and the titer test takes 4 weeks to process. At that point, options narrow fast.
We've handled hundreds of US-bound pet relocations. The patterns we see most often: incorrect vaccine documentation, microchipping done after (not before) the rabies vaccine, and health certificates issued too early or by non-accredited vets.
Frequently Asked Questions
Does my dog need to be vaccinated specifically in the USA?
Not necessarily. The CDC requires that the vaccine was administered at a CDC-approved laboratory if the dog is coming from a high-risk country. Some overseas labs are approved. Your pet transport specialist can identify which labs qualify for your country.
How long is the health certificate valid?
Health certificates for entry into the USA are generally valid for 10 days from the date of issue. The flight must occur within that window.
Can I bring my pet on the plane with me, or does it have to go as cargo?
Small animals (typically under 8 kg with carrier) can travel in cabin. Larger dogs must travel as checked baggage or cargo. An accompanied transport arrangement keeps a human escort with your pet throughout the journey.
