Health officials in upstate New York are investigating a suspected hantavirus case, though authorities say there is no indication the situation poses a broader public health threat.
The Ontario County Public Health Department (OCPHD) announced Thursday that it is reviewing what officials described as a “suspected locally acquired hantavirus case” in the Canandaigua area.
In a public statement, the department stressed that the case has no known link to the recent international hantavirus outbreak connected to the MV Hondius cruise ship.
“There is NO connection to the cruise ship outbreak, and there is no risk to the general public,” OCPHD officials said.
Suspected New York Hantavirus Case Under Review
Few details about the suspected case have been publicly released, and health authorities have not confirmed whether testing has definitively identified the virus.
Officials emphasized that hantavirus infections are considered rare in New York and continue to be uncommon nationwide.
According to the OCPHD, hantavirus is primarily spread through exposure to rodent urine, droppings or nesting materials, especially when contaminated particles become airborne during cleaning.
The department advised residents to take precautions when entering or cleaning enclosed spaces where rodents may be present.
Health Officials Urge Safety Precautions
The OCPHD recommended using protective equipment such as gloves and masks while cleaning areas like:
- Attics
- Cabins
- Garages
- Sheds
- Other enclosed spaces with potential rodent activity
Officials warned that disturbing rodent waste can aerosolize contaminated particles, increasing the risk of exposure.
The department’s warning comes as international attention remains focused on the recent cruise ship-related outbreak involving a rare hantavirus strain.
Cruise Ship Outbreak Linked to Multiple Deaths
The suspected New York case emerged as global health agencies continue monitoring a hantavirus outbreak associated with the MV Hondius luxury cruise ship.
According to the World Health Organization (WHO), 11 cases tied to the outbreak had been identified as of May 13, including:
- 8 confirmed cases
- 2 probable cases
- 1 inconclusive case
The outbreak has also been linked to three deaths.
Investigators believe the original exposure may have occurred before passengers boarded the vessel, potentially during birdwatching excursions involving rodent exposure in South America.
Human-to-Human Transmission Remains Rare
Health authorities continue to emphasize that hantavirus transmission between people is extremely uncommon.
Officials have noted that suspected human-to-human spread has only been associated with certain strains of the virus, including the Andes hantavirus strain linked to the cruise ship outbreak.
The international response has included heightened safety measures at medical facilities handling infected patients.
In the Netherlands, Radboud University Medical Center quarantined 12 staff members after hospital officials reported that blood and urine from a hantavirus patient were not initially handled under the strictest international protocols required for that strain.
Hospital officials said the quarantine was precautionary and maintained that infection risk to staff remained low.
Although hantavirus infections remain rare, health officials continue to monitor suspected cases carefully because severe infections can lead to serious respiratory and organ-related complications.
The Ontario County investigation also highlights growing public awareness surrounding hantavirus following the deadly cruise ship outbreak that drew international attention earlier this month.
For now, New York officials maintain there is no evidence of wider community risk connected to the suspected case.

