The rainy season in the Philippines brings cooler temperatures and much-needed relief from the scorching heat. However, it also increases the risk of illnesses such as dengue, leptospirosis, and flu. The Department of Health (DOH) has issued advisories to help Filipinos stay protected.

Common Rainy-Season Illnesses and How to Prevent Them

1. Dengue Fever

Cause: Spread by mosquitoes, particularly the Aedes aegypti species.
Symptoms: High fever, severe headaches, muscle pain, and rashes.
Prevention:

• Remove stagnant water around your home to eliminate mosquito breeding grounds.
• Use mosquito repellents and wear long-sleeved clothing.
• Install screens or nets on windows and doors.

Latest Statistics on Dengue in the Philippines

As of May 10, 2025, the DOH reported 110,221 dengue cases nationwide, with 437 fatalities. This marks a 67% increase compared to last year. In Metro Manila alone, 16,708 cases were recorded from January to April, reflecting a 242% surge from 2024. This sharp rise underscores the urgent need for preventive action.

2. Leptospirosis

Cause: Bacteria found in contaminated floodwaters, transmitted through cuts or wounds.
Symptoms: Fever, chills, muscle pain, and in severe cases, liver or kidney damage.
Prevention:

• Avoid walking in floodwaters; wear protective footwear if necessary.
• Keep wounds covered and disinfect them properly.
• Seek medical attention if you experience symptoms after exposure.

Latest Statistics on Leptospirosis in the Philippines

The DOH recorded 422 leptospirosis cases as of February 1, 2025, reflecting an 8% increase from the previous year. With heavy rains leading to frequent flooding, the risk of infection continues to be a concern, especially in urban areas.

3. Influenza (Flu)

Cause: Viruses spread through droplets when infected individuals cough or sneeze.
Symptoms: Fever, body aches, sore throat, and respiratory congestion.
Prevention:

• Get a flu vaccine for added protection.
• Maintain good hygiene by washing hands frequently.
• Strengthen immunity with a healthy diet and adequate rest.

General Safety Tips During the Rainy Season

✅ Drink plenty of water and eat nutritious food to boost your immune system.
✅ Always carry an umbrella and wear appropriate clothing to stay dry.
✅ Keep emergency medicine on hand for common colds and fevers.
✅ Monitor health advisories from the DOH for updated safety guidelines.

By staying informed and taking preventive measures, Filipinos can enjoy the rainy season without compromising their health.