Analysis
A side-by-side reading surface for the case index. The four classification buckets, two sort directions, and three source families combine into a small set of comparison views that keep the data honest.
Key facts
Every record on HantaScan lives in one of four buckets.
Sorting newest first surfaces movement: which records changed in the last week, which classifications are still open. Sorting oldest first surfaces structure: which records form the historical backbone, and which were added later.
Adding confirmed and probable together to get a single 'cases' number is a small change with a big communication cost. A reader sees a count and assumes confirmation. HantaScan keeps them in separate rows so the underlying classification is always visible.
A CDC confirmed entry, a CDC surveillance statement, and an NNDSS historical baseline row can sit near each other in the same week. They mean different things even when their dates are similar.
Blending classifications inflates apparent certainty; blending sources inflates apparent agreement. Both produce a cleaner-looking page at the cost of the underlying evidence level. HantaScan keeps classification and source visible on every row.
CASE INDEX
| Date | Location | Status | Cases | Deaths | Source | Signal |
|---|---|---|---|---|---|---|
| 2026-05-13 | MV Hondius — multi-country South America itinerary International | confirmed | 8 | 3 | WHO | WHO Disease Outbreak News third update on the MV Hondius hantavirus cluster: 11 linked records total — 8 laboratory-confirmed, 2 probable, and 1 inconclusive U.S. repatriated traveler. Andes virus identified as the agent of concern. Investigation continues across multiple Member States. |
| 2026-05-08 | MV Hondius cluster — WHO update International | surveillance | 0 | 0 | WHO | Second WHO Disease Outbreak News update on the MV Hondius cluster raised the confirmed count and described enhanced surveillance for returning passengers across home jurisdictions. |
| 2026-05-05 | United States — CDC monitoring posture United States | surveillance | 0 | 0 | CDC | CDC announced enhanced case-finding for returning MV Hondius passengers and issued clinician-awareness guidance through HAN. No confirmed U.S. Andes-virus cases linked to the cruise to date; the single U.S. record remains inconclusive. |
| 2026-05-04 | MV Hondius cluster — initial WHO report International | surveillance | 0 | 0 | WHO | Initial WHO Disease Outbreak News report on a hantavirus cluster linked to the MV Hondius cruise itinerary following Member State notification on May 2. Two confirmed cases and five suspected cases described at first publication. |
| 2025-03-15 | United States United States | surveillance | 0 | 0 | CDC | CDC and state health departments expanded clinician-awareness messaging on hantavirus pulmonary syndrome following a high-profile case in the rural Southwest that drew renewed national attention. |
| 2023-12-31 | United States — cumulative reported total United States | surveillance | 864 | 311 | CDC | CDC's Reported Cases of Hantavirus Disease page lists 864 laboratory-confirmed cases of hantavirus pulmonary syndrome in the United States through 2023, with historical case-fatality near 36 percent. |
| 2012-08-16 | Yosemite National Park — Curry Village United States | confirmed | 10 | 3 | CDC | Ten confirmed HPS cases were tied to the Signature double-walled tent cabins at Curry Village between June and August 2012. Deer-mouse infestation was identified between the cabin walls; the cabins were dismantled and roughly 22,000 visitors were notified. |
| 1995-07-26 | United States United States | surveillance | 0 | 0 | NNDSS | Hantavirus pulmonary syndrome added to the U.S. list of nationally notifiable diseases, formalizing weekly state-to-CDC case reporting through the National Notifiable Diseases Surveillance System. |
| 1993-11-30 | CDC — Atlanta, GA United States | surveillance | 0 | 0 | CDC | Sin Nombre virus identified as the etiologic agent of the Four Corners outbreak. The deer mouse (Peromyscus maniculatus) confirmed as the primary U.S. reservoir. |
| 1993-05-14 | Four Corners region (AZ · CO · NM · UT) United States | confirmed | 17 | 13 | CDC | Cluster of unexplained adult respiratory deaths in the Four Corners region — primarily on the Navajo Nation — prompted the CDC investigation that led to recognition of hantavirus pulmonary syndrome as a new clinical syndrome. |
Related on HantaScan
Primary Sources