rodents

New reporting from researchers, including work covered by the Natural History Museum and Phys.org, suggests shifting climate conditions could change the risks humans face from deadly rodent-borne diseases. Changes in temperature and rainfall may alter rodent habitats and populations, potentially bringing infected animals into closer contact with people and expanding where diseases like hantavirus and Lassa fever pose a threat.

Health officials are investigating a flea-borne typhus outbreak in the Wilshire Center area of Los Angeles. The bacterial illness, spread by fleas often carried by rats, cats and opossums, can cause fever, headache and rash. Local news coverage has raised awareness among residents, who are being advised to use flea control on pets and reduce rodent activity around homes.

An NPR report examines how cities like Washington, DC and New York are tackling rat infestations by changing human behavior rather than only targeting the rodents. The approach focuses on better waste management and food disposal habits, arguing that rats thrive when people leave trash accessible. Officials in both cities have run public campaigns urging residents to secure garbage and deny rats food sources.

Volunteers known as 'Rat Rangers' in Washington, DC are leading evening walks through alleys to teach residents that better sanitation is the key to rodent control. Around two dozen neighbors learn about rat biology and the damage caused by poison. The group formed after a 2024 study found rodenticides in local wildlife, prompting a push for non-chemical solutions.

Health and climate experts are warning that a warming planet could increase the risks from deadly rodent-borne diseases. As temperatures and rainfall patterns shift, rodent populations and habitats may expand, raising the chances of diseases such as hantavirus or leptospirosis spreading to more people. Reports are urging better surveillance and preparedness as climate conditions grow more favorable to outbreaks.