Leptospirosis is a bacterial infection caused by Leptospira bacteria. It is commonly spread through contact with water or soil contaminated with urine from infected animals, especially rats.

Common symptoms

Symptoms can appear about 2–30 days after exposure and may include:

• Sudden fever and chills
• Severe headache
• Muscle aches, especially in the calves and lower back
• Red eyes
• Nausea, vomiting, or diarrhea
• Abdominal pain
• Fatigue
• Severe leptospirosis

In some people, the infection can become serious and affect the kidneys, liver, lungs, or brain. Warning signs include:

• Yellowing of the skin or eyes (jaundice)
• Very little or no urine
• Difficulty breathing
• Confusion or extreme weakness
• Bleeding

Seek medical care promptly if you develop fever or other symptoms after wading/swimming in floodwater, walking through contaminated water, or having contact with potentially infected animals. Early treatment with appropriate antibiotics can reduce complications.

Prevention
• Avoid swimming or wading in potentially contaminated floodwater.
• Wear boots and protective clothing when exposure is unavoidable.
• Cover cuts and wounds with waterproof dressings.
• Wash hands and body thoroughly after possible exposure.
• Control rats and other rodents around homes and workplaces.

El Niño can strongly influence pest populations in agriculture, forestry, and public health. The impacts vary by region and pest type, but several common patterns are observed during El Niño years:

1. Increased Crop Pest Outbreaks

Hotter and drier conditions often stress crops, making them more vulnerable to insect attacks.

Common agricultural impacts include:

• Higher populations of aphids, mites, whiteflies, and caterpillars
• Faster insect reproduction because warm temperatures shorten life cycles
• Greater spread of plant diseases carried by insects

Examples:

• Rice pests such as brown planthoppers may increase in drought-stressed rice fields.
• Corn and vegetable crops often experience more armyworm or beetle infestations during prolonged dry spells.

2. Changes in Mosquito and Disease Vector Populations

El Niño can alter rainfall patterns:

• Drought may reduce some mosquito habitats.
• But intermittent rains and water storage practices can increase breeding sites for mosquitoes.

This may raise risks of:

• Dengue fever
• Malaria
• Chikungunya

In parts of Southeast Asia and the Philippines, dengue outbreaks are sometimes linked to El Niño-related climate variability.

3. Rodent Population Surges

After dry periods, sudden rains can create abundant vegetation and food supplies, leading to rapid increases in rodent populations.

Effects include:

• Crop damage
• Food contamination
• Increased disease transmission (e.g., leptospirosis)

4. Forest and Tree Pest Problems

Drought-stressed trees become weaker and less able to resist pests.

This can lead to:

• Bark beetle infestations
• Termite expansion
• Higher tree mortality
• Increased wildfire risk, which further disrupts ecosystems

5. Reduced Natural Pest Control

Extreme heat and drought can also harm beneficial organisms:

• Predatory insects
• Parasitoids
• Soil microbes
• Frogs and birds

When natural enemies decline, pest outbreaks may become more severe.

Why El Niño Often Worsens Pest Problems

Key mechanisms:

• Warmer temperatures accelerate pest development.
• Drought weakens plant defenses.
• Altered rainfall changes breeding habitats.
• Ecosystem imbalance disrupts predator-prey relationships.

In the Philippines

During strong El Niño events, farmers commonly report:

• Increased rice and corn pests
• More mites and sucking insects in vegetables
• Water shortages that reduce crop resilience
• Higher risk of fall armyworm spread in dry conditions

Pests are more than just a nuisance—they can damage your property and pose health risks to your family. Whether you’re dealing with ants in the kitchen or rodents in the attic, prevention and early action are key. Here are seven practical pest control tips to help you maintain a clean, pest-free home.

1. Keep Your Home Clean

Most pests are attracted to food and clutter. Wipe down surfaces, sweep floors regularly, and avoid leaving dirty dishes overnight. Pay special attention to crumbs and spills in hidden areas like under appliances.

2. Seal Entry Points

Small cracks and gaps in walls, windows, and doors are easy entry points for pests. Use caulk or weather stripping to seal these openings and prevent insects and rodents from getting inside.

3. Store Food Properly

Keep food in airtight containers and avoid leaving pet food exposed. This simple habit can significantly reduce the chances of attracting ants, cockroaches, and rodents.

4. Manage Moisture Levels

Many pests thrive in damp environments. Fix leaky pipes, clean gutters, and ensure proper ventilation in areas like bathrooms and basements to reduce moisture buildup.

5. Take Care of Your Yard

Overgrown plants, standing water, and piles of debris can attract pests. Trim bushes, mow your lawn regularly, and remove stagnant water to make your yard less inviting.

6. Dispose of Garbage Properly

Use sealed trash bins and take out garbage regularly. Pests like flies, rats, and cockroaches are drawn to waste and food scraps.

7. Call Professionals When Needed

If the infestation becomes unmanageable, it’s best to contact a professional pest control service. Experts have the right tools and knowledge to handle the problem safely and effectively.