MV Hondius Andes Hantavirus — 10-Case Timeline + Branches
OBSERVED CASE TIMELINE
Verified events, Apr 1 → May 10
FORWARD INCUBATION WATCH
42-day window after last possible exposure
1 Apr
11 Apr
22 Apr
28 Apr
4 May
11 May
25 May
8 Jun
21 Jun
May 10 · proxy
Case 1 — index
Dutch man, 70
Case 1 — index (Dutch man, 70) · Boarded Hondius · April 1, 2026
Case 1 — index (Dutch man, 70) · Symptom onset · April 6, 2026
Sx
Case 1 — index (Dutch man, 70) · Death · April 11, 2026
✝
Case 8 — probable
Off ship early
Case 8 — probable (Off ship early) · Disembarked · April 24, 2026
Case 8 — probable (Off ship early) · Symptom onset · April 28, 2026
Sx
Case 7 — confirmed
Switzerland
Case 7 — confirmed (Switzerland) · Disembarked · April 24, 2026
Case 7 — confirmed (Switzerland) · Symptom onset · April 28, 2026
Sx
Case 7 — confirmed (Switzerland) · Positive PCR (Andes) · May 3, 2026
PCR
Case 2 — confirmed
Dutch woman, 69 (close contact)
Case 2 — confirmed (Dutch woman, 69 (close contact)) · Symptom onset · April 22, 2026
Sx
Case 2 — confirmed (Dutch woman, 69 (close contact)) · Death · April 27, 2026
✝
Case 3 — confirmed
British, ICU evacuation
Case 3 — confirmed (British, ICU evacuation) · Symptom onset · April 22, 2026
Sx
Case 3 — confirmed (British, ICU evacuation) · Medical evacuation · April 27, 2026
Case 3 — confirmed (British, ICU evacuation) · Positive PCR (Andes) · May 3, 2026
PCR
Case 6 — confirmed
Expedition guide
Case 6 — confirmed (Expedition guide) · Symptom onset · April 28, 2026
Sx
Case 6 — confirmed (Expedition guide) · Positive PCR (Andes) · May 6, 2026
PCR
Case 4 — post-mortem
German, died on board
Case 4 — post-mortem (German, died on board) · Symptom onset · April 28, 2026
Sx
Case 4 — post-mortem (German, died on board) · Death · May 2, 2026
✝
Case 5 — confirmed
Ship physician
Case 5 — confirmed (Ship physician) · Symptom onset · April 30, 2026
Sx
Case 5 — confirmed (Ship physician) · Positive PCR (Andes) · May 6, 2026
PCR
Case 9 — confirmed
French national, symptomatic in-flight
NEW
Case 9 — confirmed (French national, symptomatic in-flight) · Symptom onset · May 10, 2026
Sx
Case 9 — confirmed (French national, symptomatic in-flight) · Positive PCR (Andes) · May 11, 2026
PCR
Case 10 — confirmed
American passenger
NEW
Case 10 — confirmed (American passenger) · Symptom onset · May 9, 2026
Sx
Case 10 — confirmed (American passenger) · Positive PCR (Andes) · May 11, 2026
PCR
A · BRANCHES DURING VOYAGE
Forked from the ship before disembarkation. Hover a card for details.
Saint Helena · 26 contact cases · April 24, 2026 · Case 1 body disembarked + ~26 local contact cases under UKHSA surveillance
🏝 Saint Helena
April 24, 2026
Case 1 body disembarked + ~26 local contact cases under UKHSA surveillance
26
SH → JNB flight · 8 contact cases · April 25, 2026 · 8 FR contact cases, in isolation (Case 2 transited)
✈ SH → JNB flight
April 25, 2026
8 FR contact cases, in isolation (Case 2 transited)
8
JNB → AMS flight · 14 contact cases · April 27, 2026 · 14 FR contact cases, in self-isolation
✈ JNB → AMS flight
April 27, 2026
14 FR contact cases, in self-isolation
14
B · DISEMBARKATION QUARANTINES — 10 MAY
5 destination clusters fork from a single disembarkation event.
10 May 2026 — disembarkation
Bichat (FR) · 5 contact cases · May 10, 2026 · 5 passengers (incl. Case 9), 42-d hospital quarantine (JO decree of 11 May)
🏥 Bichat (FR)
5 passengers (incl. Case 9), 42-d hospital quarantine (JO decree of 11...
5
Arrowe Park (UK) · 20 contact cases · May 10, 2026 · 20 UK contact cases in 45-d isolation (former COVID site)
🏥 Arrowe Park (UK)
20 UK contact cases in 45-d isolation (former COVID site)
20
Bullsbrook (AU) · 6 contact cases · May 10, 2026 · 6 contact cases (4 AU + 1 PR + 1 NZ), 21-d quarantine
🏥 Bullsbrook (AU)
6 contact cases (4 AU + 1 PR + 1 NZ), 21-d quarantine
6
Home quarantine (NL) · 29 contact cases · May 10, 2026 · 29 contact cases (passengers + crew), 42 d (RIVM)
🏠 Home quarantine (NL)
29 contact cases (passengers + crew), 42 d (RIVM)
29
National Quarantine Center (US) · 17 contact cases · May 10, 2026 · 17 passengers (incl. Case 10), federal quarantine in Omaha (Nebraska)
🏥 National Quarantine Center (US)
17 passengers (incl. Case 10), federal quarantine in Omaha (Nebraska)
17
EPIDEMIOLOGICAL NOTE
Average time from Case 1 symptoms to Cases 2-8 symptoms: 22 days. May 11 is 13 days from Cases 2-8 symptoms.
LEGEND
Sx — symptoms
PCR
Death
Board
Off-ship
Evac
Sources: WHO DON 599/600 · CDC 8 May 2026 · BFM / Le Monde / Midi Libre 11 May 2026
How to read
Blue band on the left : observed period (1 April → 10 May 2026). All events here are dated from public sources.
Salmon band on the right : forward 42-day monitoring window after the last possible exposure — the maximum known incubation period of Andes virus.
One row per case (10 in total), with its time-stamped events: symptoms (green), PCR (blue), death (red), boarding / off-ship / evacuation (triangles).
Contact-tracing branches (bottom): each destination cluster is connected by a dashed path to the moment it left the main swimlane. Red cards = at least one confirmed case among the contacts; grey cards = asymptomatic contact cases only.
Method and sources
For per-country detail, see country protocols . For per-cluster tracking with line charts, see clusters page .