Hantavirus Map Live, Global Outbreak Tracker

Generally, no. Most hantavirus species — including Sin Nombre virus, Puumala, Hantaan, and Seoul — are transmitted only through contact with infected rodents or their droppings, urine, and saliva. The single documented exception is the Andes virus (ANDV), found primarily in Argentina and Chile. Andes virus has been linked to limited person-to-person transmission, but only in cases of close, prolonged contact (e.g., household members or healthcare workers without protection). The MV Hondius cluster involves Andes virus, which is why contact tracing is being conducted internationally despite the rarity of human-to-human spread.

Hantavirus incubation typically ranges from 1 to 8 weeks after exposure, with most cases presenting symptoms 2-4 weeks after contact (CDC). This long incubation is one reason WHO continues active monitoring of MV Hondius passengers and contacts: passengers who disembarked at Saint Helena on 24 April 2026 returned home to multiple countries, so new cases linked to the cluster could emerge as late as mid-June 2026. The live country list and contact tracing scope are shown on the homepage.

The MV Hondius cluster is the active hantavirus outbreak as of 2026. Live counts (confirmed cases, suspected cases, deaths, affected countries, and people under contact tracing) are shown on the homepage KPI bar and refresh hourly from D1. Patients are hospitalized in the Netherlands, Germany, Switzerland, South Africa, and Saint Helena; contact tracing remains active in the United States, Singapore, Canada, France, the United Kingdom, and Spain. WHO, CDC, ECDC, PAHO, and Africa CDC have each issued situational updates. Prediction markets on Polymarket are tracking the probability of WHO declaring a pandemic in 2026 and additional country-specific case confirmations — see the Markets section for live odds. All numbers update hourly from 50+ sources; this FAQ deliberately avoids hardcoded figures so it never goes stale.

Early hantavirus and flu symptoms overlap: both cause fever, fatigue, muscle aches, and headache. CDC clinical sources note four differentiators. (1) Hantavirus muscle pain is severe and concentrates in large muscle groups (thighs, hips, lower back); flu pain is more diffuse. (2) Hantavirus rarely causes upper respiratory symptoms early on (no runny nose, sore throat); flu commonly does. (3) Hantavirus progresses to rapid respiratory deterioration 4-10 days after onset (HPS phase) — a hallmark not seen in flu. (4) Hantavirus has no seasonal pattern; flu peaks in winter. CDC clinical guidance specifies that a history of rodent exposure or travel to an endemic region is the key information that triggers consideration of hantavirus testing.

Hantavirus vs Ebola — 30-40% vs 25-90% mortality, rodent vs fruit-bat reservoir, no vaccine vs Ervebo. 7 key differences and live 2026 case counts. (1) Reservoir: hantavirus is carried by rodents (deer mice, voles); Ebola by fruit bats and non-human primates. (2) Human-to-human transmission: hantavirus rarely (only Andes strain, close prolonged contact); Ebola yes, efficiently via body fluids, drives multi-thousand-case outbreaks. (3) Mortality: hantavirus pulmonary syndrome (HPS) 30-40% (Andes virus); Ebola 25-90% depending on strain — Zaire ebolavirus 50-90% historically. (4) Vaccine: hantavirus has none WHO-approved internationally; Ebola has Ervebo (rVSV-ZEBOV) approved by FDA and EMA since 2019 for Zaire ebolavirus, plus advanced-trial Sudan candidates. (5) Treatment: both rely on supportive intensive care; Ebola additionally has two FDA-approved monoclonal antibody therapies — Inmazeb (REGN-EB3) and Ebanga (mAb114), which dramatically reduce mortality when given early. (6) Major outbreaks: hantavirus Argentina 1996, USA 1993 (Four Corners), and the 2026 MV Hondius cluster currently tracked. Ebola West Africa 2014-2016 (28,600 cases / 11,300 deaths), DRC 2018-2020 (3,470 cases / 2,287 deaths), plus recurring outbreaks in Uganda. (7) Pandemic potential: both have remained regional historically; neither has reached global pandemic status. Track both live: MV Hondius cluster at outbreakwatch.net and Ebola Situation Watch 2026 at outbreakwatch.net/ebola.