Country · 2026 outbreak
Hantavirus in Argentina
Last official update: May 8, 2026 UTC
Confirmed cases 2026
42
Deaths 2026
13
Lethality
31.0%
Computed from 2026 official figures
Last reported case
April 26, 2026
Context and breakdown
National Epidemiological Bulletin Week 16: 42 confirmed cases in 2026. Affected provinces: Buenos Aires, Salta (NOA epicenter with highest incidence 0.60/100k), Santa Fe, Jujuy, Río Negro, Entre Ríos and Chubut. Deaths: ~13 estimated from reported lethality above 30% on yearly cases (authority publishes lethality by season, not calendar year; 2025-26 season: 101 cases / 32 deaths).
Linked to MV Hondius outbreak
Role in the cluster
Probable exposure origin. Passengers were infected here during a bird-watching excursion before boarding the MV Hondius.
View full outbreak breakdown →Official sources
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