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Leptospirosis Cases in the Philippines: Why Rat Control and Flood Safety Matter

by | Sep 21, 2026 | Rats & Mice

Last updated on September 26th, 2026 at 11:20 am

Leptospirosis remains an important public health concern in the Philippines, particularly during periods of heavy rainfall and flooding.

As of early September 2026, the Department of Health reported 6,253 leptospirosis cases nationwide for the year. While this was lower than the number recorded during the same period in 2025, health authorities noted a sharp increase in cases during August. From August 2 to 15 alone, 824 cases were recorded, up from 465 during the previous two-week period. 

he DOH has also intensified monitoring and community outreach in flood-affected areas because people who regularly come into contact with floodwater may face greater exposure. (Philippine News Agency)

What Is Leptospirosis?

Leptospirosis is a bacterial disease caused by Leptospira. The bacteria can be carried by different animals, including rats and mice, and may be released into the environment through infected urine. CDC

Contaminated urine can reach:

  • Floodwater
  • Wet soil
  • Puddles and stagnant water
  • Food or drinking water
  • Surfaces around homes and buildings

The bacteria may enter the body through cuts or abrasions in the skin, or through the eyes, nose, and mouth.

Why Flooding Can Increase the Risk

During heavy rain and flooding, contaminated soil and animal waste can mix with floodwater.

This is why people who walk through flooded streets, clean flooded properties, work outdoors, or handle contaminated materials may face increased exposure.

Health authorities recommend avoiding floodwater whenever possible, covering cuts and wounds, and wearing waterproof boots or protective clothing when contact cannot be avoided. CDC

Watch Out for Possible Symptoms

Leptospirosis symptoms can appear within 2 to 30 days after exposure.

Possible symptoms include:

  • Fever
  • Headache
  • Muscle or body pain
  • Chills
  • Nausea or vomiting
  • Diarrhea
  • Red eyes
  • Fatigue
  • Yellowing of the skin or eyes

Severe cases can affect the kidneys, liver, lungs, or nervous system. Anyone who develops symptoms after possible exposure to floodwater or contaminated environments should seek medical attention promptly. CDC

Where Does Rat Control Come In?

Rats are one of the animals that can carry the bacteria responsible for leptospirosis.

Rodent management can therefore be part of a broader prevention strategy, alongside good sanitation, waste management, flood safety, and proper hygiene.

Property owners can help discourage rat activity by:

  • Keeping garbage containers covered
  • Storing food properly
  • Cleaning food spills and waste promptly
  • Reducing clutter
  • Checking for possible rat entry points
  • Addressing signs of rodent activity early

Rodent control should not be viewed as a replacement for medical or flood-safety precautions. Instead, it is one part of maintaining a cleaner and safer environment.

Keep Your Property Less Attractive to Rodents

Rats commonly look for three things: food, water, and shelter. Reducing these sources can help make homes and businesses less attractive to them.

If you are noticing droppings, gnaw marks, unusual noises, damaged packaging, or actual rat sightings around your property, consider having the area assessed and treated.

Need help with rat activity around your property? Book our Rat Control today!