Update log
Hantavirus Tracker Updates
Source-linked changes to the MV Hondius Andes virus outbreak dataset. Current dataset timestamp: 2026-05-30T22:00:00+08:00.
WHO DON604: 13 cases, 3 deaths, declining transmission (Rt 0.7)
WHO's fourth Disease Outbreak News reports 13 total cases as of 27 May (11 confirmed Andes virus, 2 probable) and 3 deaths (case fatality ratio 23%). Three new confirmed cases since 13 May — one each from Canada, the Netherlands, and Spain — were found through contact follow-up and routine testing; a previously inconclusive U.S. case tested negative and was removed. Over 600 contacts are monitored across 32 countries, and the effective reproduction number was 0.7 as of 22 May, indicating declining transmission.
ECDC keeps total at 12 cases and reports Rotterdam arrival
ECDC's 18 May update keeps the MV Hondius-linked total at 12 cases and 3 deaths, and reports that the ship arrived in Rotterdam with 27 crew members on board.
Canada confirms one MV Hondius-linked Andes virus case
PHAC confirmed one Canadian MV Hondius passenger positive through laboratory testing; a travelling partner tested negative and no further Canadian cases had been identified.
ECDC updates MV Hondius total to 12 cases
ECDC's 17 May update lists 12 total MV Hondius-linked cases: 9 confirmed, 2 probable, 1 inconclusive, 0 suspected, and 3 deaths.
Canada reports one presumptive positive Andes virus case
PHAC reported one presumptive positive Andes virus case among returning Canadian passengers, with the traveller isolated in hospital and clinically stable.
Australia receives six MV Hondius passengers for quarantine
Australian CDC reported that six returning passengers landed at RAAF Base Pearce and moved to the Bullsbrook Centre for National Resilience; none had tested positive at the time of the update.
Tracker updated to ECDC 14 May status split
Current count remains 11 total MV Hondius-linked cases and 3 deaths. Status split updated to 8 confirmed, 2 probable, 1 inconclusive, and 0 suspected cases based on the ECDC 14 May 2026 update.
WHO reports 11 cases and 3 deaths
WHO reported 11 cases among passengers or crew, including 9 confirmed Andes virus infections, 2 probable cases, and 3 deaths.
WHO identifies Andes virus in confirmed cases
WHO reported eight total cases, including six confirmed and two probable cases, with confirmed cases identified as Andes virus.