---
id: "california-mv-hondius-monitoring-2026"
type: "official-alert"
title: "California monitoring passengers linked to MV Hondius Andes virus exposure"
geography: "California, United States / MV Hondius passenger monitoring"
date: "2026-05-08"
status: "Official state health department update"
canonical: "https://hantavirusmaps.org/event/california-mv-hondius-monitoring-2026"
license: "CC-BY-4.0"
---

# California monitoring passengers linked to MV Hondius Andes virus exposure

California Department of Public Health · State response update

## Summary

CDPH said it was coordinating with federal and local health partners after notification that California residents were aboard the MV Hondius. CDPH described daily symptom monitoring for a returned passenger and noted that at least one other California resident remained aboard the ship, while public risk in California was extremely low.

## Safe interpretation

Passenger-response update only. It does not indicate California community transmission, patient locations, or a general local risk increase.

This record is a reviewed public health map note. It is not live surveillance, medical advice, patient-location tracking, or county-level risk prediction.

## Key fields

| Field | Value |
|---|---|
| Geography | California, United States / MV Hondius passenger monitoring |
| Date / period | 2026-05-08 |
| Status | Official state health department update |
| Layer | Public health alerts |
| Agency | California Department of Public Health |
| Status | Official state health department update |

## Sources

- California Department of Public Health: [CDPH Aware of California Passengers Exposed to Andes Hantavirus Outbreak on International Cruise Ship](https://www.cdph.ca.gov/Programs/OPA/Pages/NR26-017.aspx) — reviewed 2026-05-19; use: California update that CDPH was coordinating with federal and local partners after notification that California residents were aboard the MV Hondius and that local health officials were monitoring a returned passenger.
- Centers for Disease Control and Prevention: [Interim Guidance for Public Health Assessment and Management of People with Potential Exposure to Andes Virus](https://www.cdc.gov/hantavirus/php/emergency-guidance/index.html) — reviewed 2026-05-14; use: CDC risk-stratification and monitoring guidance for people potentially exposed through the MV Hondius Andes virus outbreak, including 42-day monitoring and high-risk/low-risk contact definitions.
- World Health Organization: [Hantavirus cluster linked to cruise ship travel, Multi-country](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON600) — reviewed 2026-05-12; use: Official international notice for the 2026 cruise-associated Andes virus cluster.

## Cite this record

https://hantavirusmaps.org/event/california-mv-hondius-monitoring-2026 (accessed YYYY-MM-DD)

Dataset: https://hantavirusmaps.org/data/map-snapshots.json