Piluca Barrau, pharmacist: “Hantavirus is not diagnosed like the flu with a rapid self-test”

The hantavirus outbreak detected aboard the MV Hondius cruise ship has once again drawn attention to a disease that remains unfamiliar to much of the public, yet immediately raises important questions: how it spreads, what symptoms it causes, and above all, whether it can be detected the same way as other respiratory infections.

At a time when at-home testing has become commonplace for viruses such as COVID-19 and the flu, the question is unavoidable: can hantavirus be detected in the same way?

To clarify the issue, we spoke with pharmacist Piluca Barrau, who emphasized a key point: this is not a virus that can be identified with a rapid pharmacy test. It requires a different approach and a different diagnostic process. Most importantly, it requires accurate information to avoid unnecessary alarm in a context where the risk to the general public remains low.

Hantavirus is a rare virus transmitted primarily through contact with, or inhalation of, contaminated particles from rodents, especially in enclosed or poorly ventilated spaces. Unlike other respiratory viruses, this is not an infection that is commonly diagnosed with an over-the-counter pharmacy test. Diagnosis requires clinical context and specialized laboratory testing.

Are there tests available to detect hantavirus?

Yes. Diagnostic tests do exist, but they are performed in healthcare and hospital settings. The most commonly used methods are serology testing, which detects antibodies against the virus, and PCR testing, which identifies viral genetic material during the acute phase of infection. The most common diagnostic approach is the detection of IgM antibodies, which indicate a recent infection.

Can someone go to a pharmacy and take a rapid test?

At this time, there are no widely available or clinically validated rapid tests for hantavirus in community pharmacies like there are for the flu or COVID-19. And this is important to explain clearly: it would not make sense to create widespread demand for at-home tests for a rare infection that requires proper medical evaluation.

Are the tests sold online reliable?

People should be very cautious. With rare infections, taking tests without medical guidance can lead to false positives, false negatives, and a great deal of unnecessary concern. That is why diagnosis should always be based on compatible symptoms, epidemiological history, and validated testing methods.

What symptoms should raise concern?

Early symptoms can resemble the flu: fever, severe fatigue, muscle aches, and headaches. The problem is that some types of hantavirus can progress into severe respiratory illness. For that reason, anyone with significant symptoms and a history of rodent exposure should seek medical attention.

What is the key message for the public?

The goal should not be to create alarm, but to provide accurate information. The risk to the general population remains low, and prevention mainly involves avoiding exposure to rodents, properly cleaning enclosed spaces, and seeking medical advice if compatible symptoms appear after a potential exposure.

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