HantaAndes Watch - Hantavirus Outbreak Tracker

MV Hondius Andes Virus Outbreak 2026

HantaAndes Watch is an independent real-time hantavirus outbreak tracker monitoring the MV Hondius Andes virus cluster of 2026. Formerly known as Hanta Watch. Track confirmed cases, deaths, repatriation flights and patient conditions. Data sourced from WHO DON599, CDC, ECDC, PAHO and verified news sources. 8 total cases, 3 deaths, 5 in treatment. Ship docked Tenerife May 10 2026. Andes virus ANDV is the only hantavirus with human-to-human transmission. Monitor period until June 8 2026. Built by Mitran, Cork, Ireland.

Keywords: hanta watch, hantawatch, hantavirus tracker, hantavirus map, MV Hondius hantavirus, Andes virus outbreak, ANDV 2026, hantavirus 2026, hantaandes, cruise ship hantavirus, hantavirus cases map, hantavirus repatriation, Tenerife hantavirus, hantavirus Ireland, hantavirus Turkey, hantavirus deaths 2026, hantavirus treatment, hantavirus vaccine pipeline

🔍 Tenerife — Ship Docked

Cases

MV Hondius

Ground Zero

Confirmed ANDV

Suspected

Monitoring

Repatriation Flights

🇺🇸 USA

🇬🇧 UK

🇫🇷 France

🇩🇪 Germany

🇧🇪 Belgium

🇮🇪 Ireland

🇳🇱 Netherlands

🇹🇷 Turkey

Other

ANDV Endemic Region (not a case)

🦠

STRAIN

📋

CASES

SHIP

💉

VACCINE

🛡

PREVENT

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⚠ ANDES VIRUS — ONLY HANTAVIRUS THAT SPREADS BETWEEN PEOPLE

All other hantaviruses require rodent exposure only. Andes virus can spread human-to-human through prolonged close contact with a symptomatic person. This is what makes the MV Hondius outbreak uniquely dangerous.

ANDV — CONFIRMED FACTS

Strain Andes Virus (ANDV)

Disease caused HCPS — Lungs / Cardiac

CFR — this cluster(Case Fatality Rate) 38%on-ship cluster · 3 of 8 cases
Broader contact pool: ~19%

Americas avg CFR 20–50%

Incubation period 1–8 weeksup to 45 days

Rodent reservoir Long-tailed pygmy rice ratSouthern Andes — Chile & Patagonian Argentina

Human-to-human YESprolonged close contact

Antiviral treatment NONE approved for HCPS

Vaccine NONE — globally

Why no antiviral works for ANDV

Ribavirin works partially for HFRS (kidney disease in Europe/Asia) but has not demonstrated effectiveness for HCPS. ANDV causes massive capillary leakage into the lungs — a different mechanism ribavirin does not address. Only ICU-level support can keep the patient alive while their immune system fights the virus.

⚠ NO VACCINE. NO ANTIVIRAL. FOR ANDES VIRUS.

As of May 2026 — confirmed by WHO, CDC, and ECDC — there is no approved vaccine or antiviral for Andes virus or HCPS.

Source: WHO DON599/600 · WHO Fact Sheet May 2026

🇰🇷 Hantavax — Not for ANDV

South Korea only. Covers Hantaan strain (kidney disease). Does NOT cover Andes virus. Not WHO-approved. Not internationally available. Irrelevant to this outbreak.

💊 Ribavirin — Ineffective for HCPS

Works partially for HFRS (Asia/Europe strains). Has NOT demonstrated effectiveness for Andes virus / HCPS. Not licensed for HCPS. Source: WHO DON599.

🏥 Only Option: Early ICU

Early ICU admission is the single most important survival factor. Mechanical ventilation, ECMO, fluid management.

MV Hondius had none of this equipment aboard.

WHO / CDC OFFICIAL GUIDANCE

🐀

Avoid rodent contact — No live/dead rodents, droppings, urine, nesting materials, saliva. Primary prevention.

💨

Never dry sweep — Wet-mop first in areas with droppings. Wear N95 mask + gloves.

🏠

Seal your home — Block all rodent entry. Rodent-proof food storage. Remove nesting materials.

🌿

Outdoor precautions — Avoid bare ground in endemic areas. Don't disturb burrows. Ecotourism in Patagonia = elevated risk.

🛳

MV Hondius passengers: Monitor for 45 days from Apr 24. Seek ICU-capable hospital immediately if fever + muscle aches + shortness of breath.

SYMPTOMS — KNOW THESE

🌡

Early (1–8 weeks post-exposure): Fever, severe muscle aches (thighs, hips, back), fatigue, headache, dizziness, nausea.

🫁

EMERGENCY — late stage: Cough, shortness of breath, chest tightness, lungs filling with fluid → cardiogenic shock. Get to ICU immediately.

🤝

ANDV human-to-human: Requires prolonged, sustained, close contact with a symptomatic person. Brief exposure is low but not zero risk.

Hantavirus Strains

Andes Virus — HCPS (deadly)

Sin Nombre — HCPS (USA)

Puumala — HFRS (mild, Europe)

Hantaan/Seoul — HFRS (Asia)

🦠 Strains

📊 Data

4 STRAINS — 2 DIFFERENT DISEASES

🔴 Andes Virus (ANDV) — THE DANGEROUS ONE

HCPS · Lungs · Human-to-Human · ACTIVE

DiseaseHCPS — respiratory/cardiac

CFR20–50% (38% this cluster)

Human-to-humanYES — unique to ANDV

ZonePatagonia, South America

Vaccine / antiviralNONE

Americas 2025229 cases · rodent→human only

⚠ Important distinction: The 229 endemic cases (Americas 2025) are all rodent → human — no human-to-human transmission involved. The MV Hondius cluster is a separate event where human-to-human spread occurred due to prolonged close contact in confined ship quarters. These are unrelated events sharing the same virus.

🔴 Sin Nombre Virus (SNV)

HCPS · Lungs · No H2H

DiseaseHCPS — respiratory

CFR~36% historical USA

Human-to-humanNO

ZoneSouthwestern USA · deer mouse

US cases 1993–2023890 confirmed

🔵 Puumala Virus

HFRS · Kidneys · No H2H · Mild

DiseaseHFRS — kidneys (NOT lungs)

CFR<1% — rarely fatal

Human-to-humanNO

ZoneFinland, Sweden, Russia, Germany

Cases 20231,885 in Europe

🟣 Hantaan & Seoul Virus

HFRS · Kidneys · No H2H

DiseaseHFRS — kidneys (NOT lungs)

CFR1–15%

Human-to-humanNO

ZoneChina, South Korea, Russia

Annual burdenThousands (China = ~50% global)

VaccineHantavax — S. Korea only (Hantaan)

Key difference: Americas strains (ANDV, SNV) cause HCPS — they attack the lungs and kill 20–50%. European/Asian strains (Puumala, Hantaan) cause HFRS — they attack the kidneys and are rarely fatal. They are different diseases. Do not compare case counts directly.

GLOBAL SURVEILLANCE DATA

Americas — HCPS (2025)

Countries reporting8 (AR, BR, USA, CL, PY, BO, PA, UY)

Confirmed cases229

Deaths59

CFR25.7%

StrainsANDV 78% · SNV 11% · Other 11%

DiseaseHCPS — lungs/cardiac

SourcePAHO / WHO DON599

Europe — HFRS (2023)

Confirmed cases1,885

Rate0.4 per 100,000

NoteLowest rate 2019–2023

CFR<1–5%

DiseaseHFRS — kidneys (NOT lungs)

SourceECDC Annual Report 2023

East Asia — HFRS (Annual)

BurdenThousands/year

China share~50% of global HFRS burden

CFR1–15%

DiseaseHFRS — kidneys

SourceChina CDC Weekly / WHO

On the "60–100K" global figure: This is a modelled burden estimate from a 2024 research paper — includes probable undetected cases. It is NOT a surveillance count. Confirmed surveillance total across all strains and both diseases: ~6,000–10,000 reported annually.

🌍 HANTA ANDES WATCH

Independent Outbreak Tracker · HantaAndes.com

⚠ Please Read Before Continuing

This is an independent public information resource built for public benefit, free to use. Not an official public health authority. Not affiliated with WHO, CDC, ECDC or any government body.

This site tracks the Andes Virus (ANDV), the only hantavirus known to spread between people, and the ongoing MV Hondius outbreak of 2026.

Data is sourced exclusively from verified public health authorities including WHO, CDC, ECDC, PAHO and national health ministries. Updates may lag official publications.

This is not medical advice. If you have health concerns related to this outbreak, contact your national health authority immediately.

Learn more about this project, data sources and methodology →