Besides plague, which rodent-borne disease is a global concern?

Leptospirosis is indeed a significant global concern as a rodent-borne disease. It is caused by Leptospira bacteria that can be excreted in the urine of infected animals, particularly rodents. This disease can be transmitted to humans through direct contact with contaminated water or soil, making it a public health issue, especially in areas where rodent populations thrive.

This disease is of particular concern in tropical and subtropical regions, where heavy rainfall can lead to flooding and increased chances of exposure. Symptoms of leptospirosis can range from mild flu-like signs to severe illness, including liver damage and respiratory distress, underscoring its potential impact on public health.

The other diseases mentioned, while significant in their own right, do not primarily transmit through rodent populations. Dengue is a viral infection spread by mosquitoes, Salmonella is associated with foodborne transmission, and West Nile virus is also transmitted by mosquitoes, primarily affecting birds. Understanding the modes of transmission for each disease highlights why leptospirosis specifically stands out in the context of rodent-borne diseases.