Hantavirus Threat Resurfaces in 2026, Experts Warn

National Pest Management Association urges caution as first positive rodent detection reported in California

Published on Feb. 3, 2026

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The National Pest Management Association (NPMA) is sounding the alarm about the resurgence of hantavirus, a deadly rodent-borne disease, after the first positive detection in California in 2026. The NPMA is renewing warnings about the dangers of hantavirus and other rodent-transmitted illnesses, emphasizing the importance of early prevention and working with pest control professionals to protect public health.

Why it matters

Hantavirus pulmonary syndrome (HPS) gained renewed attention last year following the tragic death of Betsy Arakawa, wife of actor Gene Hackman. The NPMA warns that rodent-borne diseases remain an active threat, especially as rodents seek shelter indoors during colder months. Raising awareness about the risks and proper prevention methods is crucial to safeguarding communities.

The details

According to the NPMA, California has reported the country's first positive hantavirus rodent detection of 2026, a concerning development. While deer mice are the primary carriers of hantavirus, other rodents can transmit more than 35 diseases to humans, including leptospirosis, salmonellosis, and hemorrhagic fever with renal syndrome. Rodents also pose risks by triggering allergies, contaminating food, and causing structural damage.

  • The first hantavirus-positive rodent was detected in California in 2026.
  • Last year, Betsy Arakawa, wife of actor Gene Hackman, tragically died from hantavirus pulmonary syndrome (HPS).

The players

National Pest Management Association (NPMA)

A non-profit organization with more than 4,000 members, established in 1933 to support the pest management industry's commitment to the protection of public health, food, and property from the diseases and dangers of pests.

Dr. Jim Fredericks

Board Certified Entomologist and Senior Vice President of Public Affairs at the National Pest Management Association (NPMA).

Betsy Arakawa

The wife of actor Gene Hackman, who tragically died from hantavirus pulmonary syndrome (HPS) last year.

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What they’re saying

“Rodent-borne diseases didn't disappear after last year's tragedy. The danger is real, especially during the colder months as rodents push their way indoors, but early prevention and working with a pest control professional are key to protecting your health.”

— Dr. Jim Fredericks, Board Certified Entomologist and Senior Vice President of Public Affairs at the National Pest Management Association (NPMA)

What’s next

The NPMA encourages homeowners to take immediate action if they suspect rodents in their homes, including contacting a qualified pest control professional to safely remove and prevent them from returning.

The takeaway

This resurgence of hantavirus highlights the ongoing threat of rodent-borne diseases and the importance of public awareness and proactive prevention measures. By working with pest control experts and following the NPMA's recommendations, communities can better protect themselves and their families from the dangers posed by rodent infestations.