Health Alert for Travellers to Costa Rica Due to Hepatitis A Outbreak

The U.S. Embassy in Costa Rica has issued a health alert concerning an outbreak of Hepatitis A in the country. As of September 18, 2026, there have been 772 confirmed cases, with the majority located in San José province. The Centers for Disease Control and Prevention (CDC) has categorized this situation as a Level 1 Travel Health Notice.

What is Hepatitis A?

Hepatitis A is a liver infection caused by the hepatitis A virus (HAV), which is preventable through vaccination. The virus is transmitted primarily through the ingestion of contaminated food or water, or through close personal contact with an infected individual.

Health Precautions for Travellers

Travellers to Costa Rica are advised to take precautions to avoid infection. This includes ensuring that food and water consumed are safe, practicing good hygiene, and considering vaccination against Hepatitis A before travel.

Symptoms and Response

Symptoms of Hepatitis A can include dark urine, clay-colored stools, and diarrhea. If travellers experience these symptoms, they should seek medical attention promptly.

In light of this outbreak, it is recommended that visitors stay informed about health advisories and follow local health guidelines. Staying cautious can help ensure a safe and enjoyable trip to Costa Rica.