Thailand has classified hantavirus as a “dangerous communicable disease” amid growing global concerns over the rodent-borne infection. The decision was approved by the country’s National Communicable Disease Committee, triggering stricter monitoring, faster reporting protocols, and quarantine measures nationwide.
Under the new guidelines issued by the Ministry of Public Health, suspected hantavirus cases must now be reported within three hours, while disease investigations are required to begin within 12 hours. Authorities have also mandated a 42-day quarantine period for individuals considered high-risk contacts.
Thai health officials said the move was necessary due to the potential severity of the disease and concerns surrounding certain hantavirus strains that may spread between humans, although such transmission remains uncommon. The ministry has launched an enhanced response plan focusing on surveillance, laboratory testing, treatment preparedness, and rapid local-level action.
Monitoring at airports and other international entry points has also been intensified. The Department of Disease Control is currently finalising updated definitions for “Patients Under Investigation” along with immediate-response protocols for domestic cases.
Permanent Secretary for Public Health Somruek Chungsaman said provincial health departments and hospitals across the country have been directed to maintain strict vigilance and ensure prompt communication with local communities regarding potential risks.
Health authorities have urged people who recently travelled from high-risk areas or had exposure to rodents to seek medical attention immediately if they develop symptoms such as high fever or breathing difficulties.
Hantaviruses are primarily spread through contact with infected rodents, their saliva, urine, or droppings. Human infections are commonly linked to rodent-infested environments, especially in rural areas, farms, forests, and abandoned buildings. While person-to-person transmission is rare, severe infections can lead to serious respiratory illness.
