Key outbreaks, discoveries, and milestones from 1993 to present
Outbreak
Discovery
Research
Milestone
Policy
1990s
May 18, 1993Outbreak📍 Americas
Four Corners Outbreak Identified
Four Corners region (Arizona, Utah, Colorado, New Mexico) experiences unexpected respiratory illness outbreak. Initial cases thought to be plague, but identified as hantavirus pulmonary syndrome by late May.
Sources: CDC Historical Records
June 11, 1993Discovery📍 Americas
Hantavirus Pulmonary Syndrome Named
Disease officially named Hantavirus Pulmonary Syndrome (HPS) after identification of Sin Nombre virus in deer mice samples from Four Corners region.
Sources: CDC, NEJM
August 1, 1993Outbreak📍 Americas
Four Corners Outbreak Ends
Outbreak declared officially over after 24 confirmed cases (12 fatal). Investigation reveals link to Sin Nombre virus in rodent population and human exposure.
Sources: CDC
January 9, 1996Outbreak📍 Americas
First HPS Case in Southern Region
First confirmed HPS case outside Four Corners endemic area identified in Texas, indicating virus spread or multiple exposure sources.
Sources: CDC
February 15, 1998Outbreak📍 Americas
HPS Identified in Northeastern US
New York, New Jersey, and Connecticut residents confirmed with HPS. Demonstrates virus presence in new geographic regions.
Sources: CDC
2000s
January 1, 2000Discovery📍 Europe
Hantavirus Found in Europe
First confirmed hantavirus cases in Europe reported. Puumala virus and other species identified in multiple countries.
Sources: ECDC, RKI
May 20, 2002Research📍 Global
Ribavirin Clinical Trial Results
Results published showing ribavirin administration reduces HPS mortality by approximately 30-40% when given early in infection.
Sources: NEJM
October 3, 2005Outbreak📍 Americas
Sin Nombre Virus in Canada
First confirmed Sin Nombre virus case in Canada identified in British Columbia, expanding known range of virus.
Sources: Health Canada
2010s
June 15, 2011Outbreak📍 Americas
Andes Virus in South America
Multiple cases of hantavirus hemorrhagic fever with renal syndrome caused by Andes virus confirmed in Argentina and Chile.
Sources: Pan American Health Organization
April 1, 2012Outbreak📍 Americas
Yosemite Outbreak
Outbreak in Yosemite National Park linked to rodent exposure in cabin. Leads to major environmental remediation efforts in U.S. parks.
Sources: CDC, NPS
August 22, 2015Outbreak📍 Asia
South Korea HFRS Outbreak
Major outbreak of hemorrhagic fever with renal syndrome in South Korea attributed to Puumala-like hantavirus. Multiple cases reported.
Sources: Korean CDC
2020s
January 1, 2020Milestone📍 Global
Continued Global Monitoring
WHO and CDC expand hantavirus surveillance and research funding. Increased focus on rodent population monitoring and environmental controls.
Sources: WHO, CDC
January 15, 2024Milestone📍 Global
Current Surveillance
Ongoing global hantavirus surveillance with focus on climate change effects on rodent populations and virus distribution.