Hantavirus Tracker 2026 — Live MV Hondius Case Count | HantaCount

Q: How many hantavirus cases are there in Switzerland?

As of 2026-05-07, Switzerland has reported 1 confirmed or suspected case of Andes hantavirus linked to the 2026 MV Hondius outbreak, with 0 deaths. Counts come from WHO Disease Outbreak News, ECDC threat assessments, and Switzerland's national health authority.

Q: Is hantavirus endemic in Switzerland?

The 2026 cluster in Switzerland is import-related: cases trace back to MV Hondius passengers, crew, or their household contacts. Whether hantavirus circulates endemically in local rodent populations of Switzerland is a separate epidemiological question — consult the country's public health authority for endemic surveillance.

Q: What should travellers to or from Switzerland do about hantavirus?

Travellers who were on MV Hondius or in close contact with a returning passenger should monitor for fever and respiratory symptoms for 42 days post-exposure. Contact the local health line if symptoms develop. In Switzerland, public health is coordinated by Bundesamt für Gesundheit (BAG). See https://hantacount.com/en/countries/ch for live counts and the latest official guidance.

Q: How is hantavirus transmitted in Switzerland?

Andes virus (ANDV) is the only hantavirus with documented person-to-person transmission, but it requires close, prolonged contact — typically household members or healthcare workers without PPE. Most Switzerland cases are returning MV Hondius travellers or their close contacts. Casual transmission (transit, shops, schools) has not been documented for ANDV.

Q: Is there a hantavirus vaccine available in Switzerland?

There is no licensed hantavirus vaccine available in any country as of 2026. Treatment is supportive — early intensive care including extracorporeal membrane oxygenation (ECMO) where available significantly improves outcomes. Prevention focuses on rodent control and avoidance of contaminated environments.

HantaCount Editorial

CH

Hantavirus cases in Switzerland

Switzerland is one of 14 countries with confirmed cases linked to the 2026 MV Hondius hantavirus outbreak. This page tracks the local count, lists the attributable events, and updates every time the underlying dataset is revised.

Total cases

1

Deaths

0

Last event

2026-05-07

Country note

Passenger who disembarked at Saint Helena, symptoms after returning to Switzerland; treated in Zurich.

Context

The 2026 outbreak is caused by Andes virus (ANDV), the only hantavirus with documented person-to-person transmission. The index event is a cluster aboard the Dutch-flagged cruise ship MV Hondius. Switzerland cases are either:

Returning passengers or crew of the MV Hondius
Household or close-contact cases of returning travellers
Suspected pre-cruise exposures (rare, currently under investigation)

The country's national focal point reports cases up to WHO and ECDC; we update from those publications.

Read

Hantavirus symptoms

What to watch for if you were on the Hondius or in close contact with a returning traveller.

Read

How contact tracing works

The 42-day window, ring tiers, and what investigators actually do.

If you're in Switzerland — official guidance

Public health authority: Bundesamt für Gesundheit (BAG)
Current MV Hondius protocol: Hospitalisation in Zurich; symptom-led discharge.

Switzerland — read in another language

trİsviçre arسويسرا esSuiza nlZwitserland frSuisse deSchweiz jaスイス fiSveitsi ruШвейцария

Other affected countries

Source & method

Counts on this page come from the same dataset that powers the homepage. Every figure links back to a primary source — WHO Disease Outbreak News, ECDC threat assessments, or a national ministry of health communiqué. Open dataset: /data.

Compare with other affected countriesSide-by-side cases, deaths and last events.

Hantavirus cases in Switzerland

Country note

Context

If you're in Switzerland — official guidance

Switzerland — read in another language

Other affected countries

Source & method

Hantavirus Symptoms: Early Signs, Timeline, and When to Seek Care

Andes Virus Person-to-Person Transmission: How It Spreads & 2026 Cruise Ship Risk

Andes Virus: Why This Hantavirus Strain Is Different

Hantavirus Contact Tracing on the MV Hondius: How a 1,500-Passenger Ship Becomes a Manageable Cohort

Hantavirus cases in Switzerland

Country note

Context

If you're in Switzerland — official guidance

Switzerland — read in another language

Other affected countries

Source & method

Understand the outbreak

Hantavirus Symptoms: Early Signs, Timeline, and When to Seek Care

Andes Virus Person-to-Person Transmission: How It Spreads & 2026 Cruise Ship Risk

Andes Virus: Why This Hantavirus Strain Is Different

Hantavirus Contact Tracing on the MV Hondius: How a 1,500-Passenger Ship Becomes a Manageable Cohort