Independent surveillance · Editorially reviewed Data last verified: 21 May 2026 · 09:00 UTC
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● MV Hondius cluster · Day 14 · CDC briefing confirms zero US Andes cases
Report date: 15 May 2026 Status: Archived snapshot Risk: ECDC VERY LOW
Dashboard/ Daily Reports/15 May 2026

CDC 15 May briefing: zero confirmed US Andes virus cases; ECDC reports no new cluster activity

A consolidated 24-hour summary covering events reported between 14 May 06:00 UTC and 15 May 06:00 UTC.

Compiled from primary sources Editor: Hristo Stanchev Sources cited: 3 Events logged: 3
Confirmed / probable (cumulative)
10
±0 (no new cluster cases)
Under investigation
0
none active
Deaths (cumulative)
3
±0 in past 24h
Countries involved
12
monitoring continues

What happened on 15 May

CDC Incident Manager Dr. David Fitter held a daily briefing reaffirming zero confirmed US Andes virus cases linked to the MV Hondius cluster. The 18 Americans in Nebraska quarantine and the smaller cohort at Emory Atlanta remained asymptomatic. 41 individuals nationally were under 42-day monitoring per CDC's federal quarantine guidance. The agency reiterated that the public risk in the United States remained very low.

ECDC issued its 15 May surveillance update with no new cluster cases or deaths since the previous publication, maintaining the cumulative total of 10 confirmed and probable cases plus the resolved US inconclusive entry. Separately, Washington State health authorities confirmed an unrelated locally acquired hantavirus case attributable to Sin Nombre virus, explicitly noted as having no connection to the MV Hondius cluster and no person-to-person transmission risk.

24-hour event log (15 May 06:00 → next day 06:00 UTC)

15 May · 19:00
update

CDC briefing: zero confirmed US Andes virus cases

CDC Incident Manager Dr. David Fitter confirms in 15 May briefing that the US has zero confirmed Andes virus cases. 41 individuals nationally under 42-day monitoring. 18 Americans in Nebraska biocontainment quarantine remain asymptomatic. Public risk remains very low.

Source: CDC daily briefing transcript, 15 May 2026
15 May · 10:00
update

ECDC 15 May update: no new cases or deaths

ECDC surveillance update confirms no new cases or deaths in the MV Hondius cluster since previous update. Cumulative total remains 10 confirmed and probable cases (8 confirmed + 2 probable). EU/EEA general population risk remains very low.

Source: ECDC outbreak surveillance, 15 May 2026
15 May
update

Washington State: unrelated Sin Nombre hantavirus case

Washington State Department of Health confirms a locally acquired hantavirus case (Sin Nombre virus, not Andes) following rodent exposure. Explicitly stated as having no connection to MV Hondius cluster. No person-to-person transmission risk. Separate from the 6 cluster-related contacts currently monitored in WA.

Source: Washington State Department of Health press release

Sources cited in this report

  1. CDC daily briefing, 15 May 2026. www.cdc.gov
  2. ECDC outbreak surveillance page. www.ecdc.europa.eu
  3. Washington State Department of Health.

See methodology for the source-tiering framework and corrections log for any future amendments to this report.