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.

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 officials are investigating a flea-borne typhus outbreak in the Wilshire Center neighborhood of Los Angeles. The bacterial illness, spread to people through infected fleas often carried by rats, cats and opossums, can cause fever, headache and rash. The report has drawn significant attention from residents concerned about rodent populations and sanitation in the area.

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.