Health authorities step up screening and hygiene advisories despite no suspected cases detected in Bali.

Bali has moved to tighten hantavirus surveillance at its airports and seaports and ramp up public hygiene guidance, even as officials say no suspected cases have been found on the island so far.

Tight Monitoring At Airports And Seaports
Bali Health Agency head I Nyoman Gede Anom said on Tuesday that all entry gates to the island are now under tighter watch. “There has been no case or suspected case of hantavirus detected in Bali so far,” he said, adding that surveillance has been strengthened at seaports and airports as a preventive step after suspected cases emerged elsewhere in Indonesia. Officials are coordinating closely with local health offices and medical facilities to flag anyone presenting with severe flu-like symptoms who may have had contact with rats or heavily contaminated environments.

Focus On Returning Workers And Cruise Crew
The agency has also tightened screening of Indonesians working abroad, including those employed on cruise ships, when they return to Bali. This follows heightened national vigilance after a British resident in Jakarta was identified as a close contact of a confirmed hantavirus case from the MV Hondius cruise ship outbreak in Europe. The 60-year-old, who shared accommodation and a flight segment from Saint Helena to Johannesburg with the second confirmed Hondius case, arrived in Jakarta on April 30 and self-isolated. PCR tests later returned negative results for two hantavirus strains, including one previously found in Indonesia.

Public Hygiene And Safe Cleaning Advice
To reduce local risk, Bali authorities are urging residents to step up home and environmental cleanliness to control rat populations. People are advised to be cautious when cleaning houses or business premises that have been closed for a long time, using masks and gloves and avoiding sweeping dry rat droppings, which can send contaminated dust into the air. The agency recommends spraying droppings with disinfectant—such as diluted household bleach—before removal, and practising regular handwashing with soap and running water afterwards.

Understanding Symptoms And Transmission Routes
Gede Anom emphasised that early hantavirus symptoms resemble severe flu, including fever, dizziness and muscle pain, but in some cases can progress to serious respiratory problems. Hantavirus is a zoonotic virus that naturally infects rodents and is occasionally transmitted to humans through contact with contaminated urine, droppings or saliva, or via inhalation of dust from dried excreta. Residents who develop fever and muscle pain after exposure to rodent-infested areas are urged to seek prompt medical checks at the nearest clinic so cases can be detected and managed early.

National Coordination And Ongoing Vigilance
The Bali Health Agency is working with Indonesia’s Health Ministry to monitor real-time developments in hantavirus cases nationwide and to align surveillance protocols. Authorities stress that, even in the absence of local cases, heightened awareness and clean living practices are essential on a tourism-dependent island with high traveller turnover. For Indonesians and Singaporeans, Bali’s response illustrates how targeted border screening, clear hygiene guidance and rapid coordination with national health bodies can help keep a rodent-borne infection contained while maintaining confidence among residents and visitors.

By tightening entry-point surveillance, focusing on returning overseas workers, and pushing practical rodent-safe hygiene measures, Bali is trying to stay ahead of hantavirus risks before any cases surface on the island. For Indonesians and Singaporeans, the approach reinforces that early vigilance and everyday cleanliness are key defences against emerging zoonotic threats in popular travel corridors.

Sources: The Jakarta Post (2026) , Asia News Network (2026)

Keywords: I Nyoman Gede Anom, Bali Entry Gates Monitoring, Rat Borne Virus Prevention, Returning Cruise Workers, MV Hondius Contact Case, PCR Hantavirus Testing