Crossref · Wavefront propagation in a hyperbolic model of hantavirus infection · 1s agoCrossref · Could bradykinin pathway inhibition change the course of severe hantavirus disease? · 1s agoCrossref · Outbreak at Sea: The MV Hondius Hantavirus Cluster as a Sentinel for Global Pandemic Readiness · 1s agoCrossref · Microbe snapshots: Hantavirus (Sin Nombre) · 1s agoCrossref · Hantavirus on the rise: clinical, virological, immunological, and public health perspectives · 1s agoCrossref · Pregnancy and hantavirus infection: maternal, fetal, and neonatal outcomes − a systematic review · 1s agoCrossref · Emerging threat of hantavirus infection: Public health challenges during an international cruise ship outbreak · 1s agoCrossref · “Hantavirus at sea: Why cruise ships must be ready for animal-borne disease.” · 1s agoCrossref · Wavefront propagation in a hyperbolic model of hantavirus infection · 1s agoCrossref · Could bradykinin pathway inhibition change the course of severe hantavirus disease? · 1s agoCrossref · Outbreak at Sea: The MV Hondius Hantavirus Cluster as a Sentinel for Global Pandemic Readiness · 1s agoCrossref · Microbe snapshots: Hantavirus (Sin Nombre) · 1s agoCrossref · Hantavirus on the rise: clinical, virological, immunological, and public health perspectives · 1s agoCrossref · Pregnancy and hantavirus infection: maternal, fetal, and neonatal outcomes − a systematic review · 1s agoCrossref · Emerging threat of hantavirus infection: Public health challenges during an international cruise ship outbreak · 1s agoCrossref · “Hantavirus at sea: Why cruise ships must be ready for animal-borne disease.” · 1s ago
LAUnited StatesHPSBayou

Hantavirus in Louisiana.

Louisiana is the principal endemic zone for Bayou virus, which causes HPS with renal involvement more prominent than Sin Nombre HPS. Cases concentrate in the southeast — particularly the parishes around the Atchafalaya Basin. Louisiana Department of Health works with LSU and CDC on serosurveillance of rice-rat populations after major flood years.

YTD CASES (2026)
1
5-YEAR AVERAGE
0.8
DOMINANT STRAIN
Bayou
ECOLOGY
Coastal marshes and wet pine flatwoods; year-round transmission risk.

Frequently asked

How many hantavirus cases has Louisiana reported?

Louisiana has reported 1 confirmed hantavirus pulmonary syndrome cases year-to-date in 2026, against a 5-year average of 0.8 per year. Case counts vary year-on-year with rodent population cycles.

What rodent carries hantavirus in Louisiana?

Rice rat (Oryzomys palustris). Coastal marshes and wet pine flatwoods; year-round transmission risk.

Which strain causes hantavirus in Louisiana?

Bayou virus is the dominant hantavirus strain in Louisiana. It causes hantavirus pulmonary syndrome (HPS) with case fatality typically 30–40%.

Related

Disclaimer. State case counts reflect what CDC NNDSS publishes. The state health department is the authoritative real-time source.