Question 1

How many hantavirus cases per year are reported in Canada?

Accepted Answer

Canada reports approximately 2–12/year confirmed hantavirus cases, based on Government of Canada — Notifiable Disease Surveillance surveillance through 2023. Cumulative confirmed cases since systematic surveillance began are approximately 130. The reported case-fatality rate is approximately 30%. The dominant strain is Sin Nombre virus causing hantavirus pulmonary syndrome (HPS). Most cases in Alberta, British Columbia, and Saskatchewan. Sin Nombre virus. See Government of Canada — Notifiable Disease Surveillance for the authoritative current figure.

Question 2

Is hantavirus present in Canada?

Accepted Answer

Yes — Canada is a known reporting region for hantavirus. The principal strain associated with human cases is Sin Nombre virus, primarily carried by deer mouse. Local transmission produces hantavirus pulmonary syndrome (HPS). Canada currently shows a low Hantavirus Tracker risk index, meaning no notable signals have been detected from monitored sources in the recent window.

Question 3

What is the current hantavirus risk in Canada?

Accepted Answer

No active risk signals are being detected for Canada in the current window. This means the Hantavirus Tracker has not seen meaningful news, outbreak reports, or surveillance updates for the country in the last 30 days.

Question 4

How does hantavirus spread in Canada?

Accepted Answer

Most human infections in Canada occur when people inhale aerosolized particles from rodent urine, droppings, or saliva, typically while cleaning enclosed spaces such as cabins, sheds, barns, or rural homes that have had rodent activity. Less commonly, infection follows a rodent bite or eating food contaminated by rodents. Person-to-person spread is generally not documented for hantaviruses globally, with the notable exception of Andes virus in southern South America, which has produced confirmed person-to-person clusters in Argentina and Chile.

Question 5

What are the symptoms of hantavirus and when should someone in Canada seek care?

Accepted Answer

Early symptoms appear roughly one to eight weeks after exposure and include fever, severe muscle aches (especially in the thighs, hips, lower back), headache, nausea, vomiting, and abdominal pain. After several days, patients with HPS develop coughing and rapidly worsening shortness of breath as fluid fills the lungs — this phase can be fatal within hours without intensive care. Anyone with flu-like symptoms and recent rodent exposure (within the last six weeks) should contact a healthcare provider immediately and explicitly mention the rodent contact history.

Question 6

How is hantavirus prevented in Canada?

Accepted Answer

Prevention focuses on reducing contact with rodents and their droppings: seal openings ¼ inch and larger in homes and outbuildings, store food in rodent-proof containers, remove brush and woodpiles near dwellings, and clean rodent-contaminated areas safely. Never sweep or vacuum dry droppings — that aerosolizes the virus. Instead, ventilate the space, wear gloves and an N95 respirator, spray surfaces with a 1:10 bleach-water solution, let it soak five minutes, then wipe with paper towels and double-bag the waste. People working in rural agriculture, hantavirus-endemic forests, or cleaning long-unused cabins in Canada are at the highest occupational risk.

Hantavirus in Canada

Recent news from Canada

Hantavirus in Canada: questions answered

Prevention

Other countries to watch