Hantavirus risk

Hantavirus

MV Hondius, a cruise ship with 148 passengers

Deaths, 3
Confirmed infections, 2
Suspected, 8

At least 29 passengers (12 nationalities) left 24 April (after the first fatality).

Many parts of US (Georgia, California and Arizona) ?Canada, Australia, Tiawan, Germany, Netherlands, Spain

2 Brits self-isolating at home for 45 days

One woman (non-passenger) in Netherlands being assessed

KLM stewardess, (symptomatic) is in an isolation ward at an Amsterdam hospital

Anchored (not docked) in Tenerife

Passengers confined to small rooms

Two tropical disease doctors have boarded

No rats found on board

History

Gene Hackman and Arakawa, March 2025, New Mexico

Korean haemorrhagic fever (3,000 cases, 1950 - 1953)

Virus isolated 1976

Hanton river area SK

Andes strain of hantavirus

Endemic in Argentina, host is long-tail pygmy rice rat

Andes human to human has been documented in the past

WHO
https://www.who.int/news-room/fact-sheets/detail/hantavirus

CDC
https://www.cdc.gov/hantavirus/about/index.html

UKHSA
https://ukhsa.blog.gov.uk/2026/05/05/what-is-hantavirus-how-is-it-transmitted-and-what-are-the-symptoms/

European
https://www.ecdc.europa.eu/en/hantavirus-infection

Mayo
https://www.mayoclinic.org/diseases-conditions/hantavirus-pulmonary-syndrome/symptoms-causes/syc-20351838

JAMA
https://jamanetwork.com/journals/jama/fullarticle/2834395

“Seoul virus”, (Seoul Olympics)

Affects the kidneys rather than the lungs in humans

Found in wild brown rats worldwide (very rarely, pet rats)

Not transmitted from person-to-person

Isolated incidents since 2012.

Transmission to humans

Mainly through contact with infected rodents,

and their waste products.

Breathing in contaminated particles, dried urine, droppings, or saliva.

Old dusty places, (sweeping a shed, barn, attic, or cabin)

Virus-containing particles become airborne and inhaled.

(Hantavirus pulmonary syndrome)

Touching contaminated surfaces — then to mouth, nose, or eyes.

Rodent bites, possible

Eating contaminated food, rare

Human-to-human transmission

Close contacts, household, people sharing cabins

US, CDC

Identified 864 cases (1993 - 2023)

Cases identified in 40 states,

most are from rural areas in the western US,

including California, Washington, Arizona, New Mexico, and Colorado.

Rodents

Infected for life, often asymptomatic

Clusters on infection in some breeding areas
Incubation

Typically, 1 to 8 weeks

Pathology

Immune reaction in the lungs  inflammation  pulmonary oedema

Symptomatic mortality 5% to 15% to 33%

Most people with antibodies don’t know they have had the disease

Hantavirus symptoms and severity depend on the specific virus causing infection.

Hantavirus Pulmonary Syndrome

Western hemisphere (including the US)

Hantavirus pulmonary syndrome.

Starts with flu-like symptoms

Fever, chills, fatigue, muscle aches, headache, abdominal pain, nausea, vomiting, or diarrhea.

About 4 to 10 days later, patients may develop cough and shortness of breath that can rapidly worsen

Haemorrhagic Fever With Renal Syndrome

Primarily in Europe and Asia

Starts with fever, chills, headache, back pain, abdominal pain, and nausea, and some may develop blurred vision, eye redness, rash, and facial flushing.

Later, internal bleeding, low blood pressure, and kidney failure.

Mortality’ from hemorrhagic fever with renal syndrome ranges from 1% to 15%

Management

Optimise immunity

Limited general antiviral

Supportive


https://www.telegraph.co.uk/health-fitness/conditions/cold-flu/hantavirus-how-contagious-deadly-infection-outbreak-cruise/

https://www.theguardian.com/world/2026/may/07/global-race-under-way-to-trace-passengers-who-left-hantavirus-ship-before-outbreak-confirmed Receive SMS online on sms24.me

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