Starting August 1, 2024, all dogs entering or re-entering the U.S. must meet new requirements to protect the country from reintroduction of dog-mediated rabies virus variant (DMRVV or canine rabies), regardless of the planned duration of stay or the country of origin. In adopting these regulations, the U.S. Centers for Disease Control and Prevention (CDC) aligned U.S. importation requirements for dogs with the importation requirements of other countries free of canine rabies by requiring proof of rabies vaccination and adequate serologic test results (titer) from a CDC-approved laboratory. 

View AVMA's FAQs for veterinarians: https://www.avma.org/sites/default/files/2024-06/mcm_cdc-faq-flyer-digital-2024.pdf