Example case: a Nong Rong household whose dogs and cat fell ill after the water dropped (2026)

This is an illustrative scenario based on situations commonly seen in pet-owning homes during floods, not the account of any real person.

Fon's family lives in a single-storey house in Nong Rong with two mixed-breed dogs, a cat and a few backyard chickens. When floodwater reached the village around the turn of September and October 2026, the family lifted belongings to higher ground. The dogs stayed on a wooden platform out front but kept wading and drinking the water around the house. Rats fleeing the fields came indoors every night.

About a week after the water receded, the older dog became lethargic, stopped eating, vomited, passed little urine and had yellowish gums. The puppy had watery diarrhoea, and the cat developed a round bald patch on one ear. Fon, who hugged the dogs every day, got an itchy red ring-shaped rash on her arm. Her mother, who cleaned the chicken coop bare-handed, had stomach cramps and diarrhoea, and her father was nipped by a frightened dog while lifting it into the car.

The vet wanted the older dog tested for leptospirosis and warned that it spreads to people through animal urine. At the hospital the doctor cleaned the father's wound, assessed his rabies and wound-infection risk, examined Fon's rash, and asked her mother about contact with chicken droppings.

The Nong Rong, Nong Khae, Saraburi flood of 2026 (B.E. 2569): what PRD reported

According to the Government Public Relations Department (PRD), on 1 October 2026 the Minister of Tourism and Sports visited Nong Rong sub-district, Nong Khae district, Saraburi, which had been hit by flooding. The areas visited covered several sub-districts and villages, with several hundred households affected according to PRD's report. Medical supplies, food and drinking water were handed out, and officials continued to monitor water levels.

Nationally, Department of Disaster Prevention and Mitigation data as of 06:00 on 7 October 2026, published by PRD, showed 27 provinces plus Bangkok affected, covering 123 districts, 984 sub-districts, 1,154,875 households and more than 3.1 million people.

In rural and semi-rural areas like Nong Khae, many homes keep dogs, cats, chickens or other animals. When water rises, pets, strays, rats and farm animals crowd into the same dry spots, and their urine and droppings mix with floodwater flowing into homes. The example case is illustrative and does not describe any particular home in Nong Rong.

Why do pets get sick after floods, and how do their germs reach people?

• Pets wade and drink standing water contaminated with rat urine, droppings and sewage.
• Rats move indoors, and pets chase or bite them.
• Stress lowers immunity: noise, relocation, short food and constant damp.
• Animals crowd together, including pets from several homes and strays.
• Wet fur and skin invite fungal and bacterial skin infections.
• Frightened animals bite and scratch when lifted, moved or approached by strangers.
• People and pets sleep closer together upstairs or on platforms, with more contact with saliva, fur and droppings.
• Soaked litter trays, pens and cages spread droppings onto floors where children play.

Which germs can pass from sick pets to people after a flood?

The germs below are grouped by route of spread. Diagnosis in people belongs to a doctor and in animals to a vet.

Group 1: bacteria in urine and droppings

1. Leptospira (leptospirosis). It is not only rats: dogs, cattle, pigs and other animals can be infected and shed the bacteria in urine. An infected dog may be lethargic, vomit, refuse food, pass little urine or show yellow gums or eyes. People are infected when animal urine, or soil and water contaminated by it, touches cuts, scrapes, waterlogged skin or the eyes and mouth. Human symptoms usually start one to two weeks later: sudden high fever, headache, marked calf pain and red eyes. Wear gloves and boots when cleaning up after a sick dog, and ask a vet about vaccination.

2. Salmonella. Turtles, lizards, chicks, chickens and sometimes dogs and cats can carry Salmonella without symptoms and shed it in droppings. Floods spread those droppings around, and people who handle animals, clean pens or touch soiled surfaces without washing may develop diarrhoea, cramps and fever. Salmonella is on the product's listed organisms (according to the product information).

3. Campylobacter jejuni. Common in puppies and kittens with diarrhoea, and in poultry. People catch it from hands contaminated with droppings, causing cramps, diarrhoea that is sometimes bloody, and fever.

4. Escherichia coli. Some strains carried in animal dung, such as cattle manure, can cause severe or bloody diarrhoea. Floodwater can carry manure from pens and pastures into homes, wells and vegetable gardens, so wash produce well and use safe drinking water.

Group 2: germs from bites and scratches

5. Rabies virus. During floods, strays and frightened pets are more likely to bite. Rabies is an extremely serious disease spread in the saliva of infected dogs, cats and other mammals through bites, scratches or licks on broken skin. After any bite or scratch, wash the wound with soap under running water for about 15 minutes straight away, then see a doctor the same day. The doctor will assess the risk and decide on vaccination. Household spraying has no role here: prevention is vaccinating pets as the vet advises and seeking medical care immediately after a bite.

6. Pasteurella multocida. Common in the mouths of dogs and cats. Infected bites or scratches become red, hot, swollen and painful, often within a day. Cat bites look small but are deep and easily infected. Spreading redness or pus needs a doctor.

7. Bartonella henselae (cat scratch disease). Carried by cats, especially kittens, and their fleas. After a scratch or bite, a small bump may appear, followed days or weeks later by swollen, tender lymph nodes nearby, sometimes with fever and tiredness. Flea control on the vet's advice lowers the risk.

Group 3: skin fungi and mites

8. Microsporum canis (ringworm from cats and dogs). Causes round bald, scaly patches on cats and dogs, especially on ears, face and legs. People who cuddle them, particularly children, get itchy red rings with clearer centres on arms, neck or face. Spores linger on pet beds, sofas and rugs, so washing bedding and cleaning surfaces help.

9. Canine scabies mite (Sarcoptes scabiei var. canis). Makes dogs intensely itchy with hair loss and crusting skin. People in close contact may get temporary itchy bumps that usually settle once the dog is treated. Spraying does not replace treating the mites on the animal.

Group 4: parasites from droppings and soil

10. Dog and cat roundworms (Toxocara canis, Toxocara cati). Eggs pass in droppings and survive in soil for months, and floods spread them across yards. Larvae can migrate through the body, causing fever, cough, stomach pain or, in some cases, eye problems. The eggs resist ordinary disinfectants, so the main defences are picking up droppings daily, deworming pets as the vet advises and hand washing after outdoor play. We do not claim spraying destroys these eggs.

11. Dog and cat hookworms (Ancylostoma), the cause of creeping eruption. Hookworm larvae from animal droppings live in moist soil and sand. Walking barefoot or sitting on the ground after the water drops lets them burrow into skin, leaving a raised, winding, very itchy red track, usually on the feet, legs or buttocks. Wearing shoes outdoors is the most effective protection.

12. Giardia duodenalis. A single-celled parasite found in dogs, cats and people, causing prolonged, foul-smelling diarrhoea and bloating. Its cysts survive in standing water and damp soil and resist many disinfectants. Boiled or bottled drinking water, hand washing and prompt removal of droppings are the main defences; spraying supports surface hygiene but we do not claim it kills cysts.

13. Toxoplasma gondii. Cats are the main host, shedding oocysts that persist in soil. Most infected people have no symptoms, but pregnant women and people with weak immunity need particular care because the parasite can affect an unborn baby. After a flood scatters litter and droppings, pregnant women should not change litter or clean up cat droppings; if unavoidable, wear gloves, wash hands at once and talk to the antenatal doctor.

Group 5: germs from fleas, rats and birds

14. Rickettsia typhi (murine typhus). Rats fleeing floodwater bring their fleas, which may move onto pets or bite people. Infection causes fever, headache, body aches and sometimes a rash. Controlling rats indoors and fleas on pets, with the vet's advice, lowers the risk.

15. Cryptococcus neoformans and Chlamydia psittaci from bird droppings. During floods, pigeons roost under eaves and families bring bird cages indoors. Dried droppings that turn to dust may carry Cryptococcus, a fungus dangerous to people with weak immunity, and sick birds can spread Chlamydia psittaci, which causes fever and pneumonia in people. Wet droppings down before removing them, never dry-sweep, wear an N95 mask and gloves, and use professional cleaning for heavy build-up.

Serious pet illnesses that do not spread to people

Dogs may also catch parvovirus, which causes vomiting and bloody diarrhoea, or canine distemper after floods. These do not infect people. Parvovirus survives in the environment for a very long time, so homes with a sick puppy should ask the vet about cleaning and isolation, and keep vaccinations on schedule.

When should you see a doctor right away? Red flags after contact with sick animals

See a doctor immediately, or call 1669, if:

• A dog, cat or other mammal bites, scratches or licks a wound: wash with soap and running water for about 15 minutes, then see a doctor the same day.
• High fever after wading or cleaning up animal urine, with severe calf pain, red eyes, reduced urine or yellow skin. Mention floodwater and sick-animal contact.
• A bite or scratch becomes red, hot, very painful, spreads fast or oozes pus.
• Swollen, tender lymph nodes with fever after a cat scratch.
• Bloody diarrhoea, severe abdominal pain or signs of dehydration.
• A child who plays in soil has fever, a lasting cough, stomach pain or vision problems.
• A winding, intensely itchy rash on the feet or legs.
• Fever, cough or breathlessness after cleaning bird droppings or caring for a sick bird.
• A pregnant woman who handled cat droppings, or anyone with weak immunity who develops fever after contact with sick animals.

We do not name medicines or doses; treatment of people is for doctors and of animals for vets.

Signs your pet needs a vet

Marked lethargy, not eating for more than a day, vomiting or bloody diarrhoea, little urine, yellow gums or eyes, breathing difficulty, swollen or pus-filled wounds, round bald patches, or unusual aggression. Wear gloves when caring for a sick animal.

How to stop germs passing from pets to people after a flood

1. Wash hands with soap after touching animals, feeding them or picking up droppings, and before eating, especially children.
2. Wear gloves and boots to clean pens, cages, litter trays and urine-soaked areas.
3. Do not let pets drink floodwater or puddles; give clean water in washed bowls.
4. Pick up droppings daily, bag them and dispose of them properly.
5. Replace soaked cat litter and wash the tray; pregnant women should leave this to someone else.
6. Wear shoes on soil and in the yard after the water drops, and keep children out of muddy areas where animals toilet.
7. Do not let pets lick faces or wounds, and keep human wounds covered.
8. Control rats and fleas: store pet food in sealed containers, remove rubbish and ask the vet about flea control.
9. Take pets for check-ups, vaccinations and deworming as the vet advises, and wash or discard flood-soaked pet bedding.

Why cleaning alone may not be enough in a pet household

After a flood, homes with pets usually have more urine and droppings spread around, from their own animals and from rats that moved in. Washing with water removes mud but does not disinfect, favourite sleeping and hiding spots under sofas and behind cupboards get missed, home-mixed products are easy to get wrong, and strong fumes can irritate animals' noses. Air fresheners only mask the smell of urine.

What WHO and CDC advise: clean first, then disinfect

WHO and CDC advise removing mud and damaged materials, washing surfaces with water and detergent, then disinfecting surfaces that touched floodwater, and drying the home quickly, generally within 24 to 48 hours, to limit mold. Thailand's Department of Disease Control warns people to watch for leptospirosis and rabies during floods.

WHD disinfection spraying after the Nong Khae, Saraburi flood of 2026, with CHEMGENE HLD4H

World Health Disinfection (WHD) provides a disinfection spraying service for homes and buildings. According to the service information, trained technicians spray and/or ULV-fog (Ultra Low Volume fine mist) with CHEMGENE HLD4H, a medical-grade UK disinfectant containing Benzalkonium Chloride and Didecyldimethylammonium Chloride. The service and product pages describe it as broad-spectrum against viruses, bacteria and fungi, listing organisms such as Salmonella, avian influenza H5N1, influenza H1N1, norovirus and COVID-19, with a stated efficacy of 99.99% (service page). Listed endorsements include the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019.

Transparency about the germs in this article: Leptospira, Campylobacter, E. coli, Pasteurella, Bartonella, Rickettsia, Chlamydia psittaci, Microsporum and Cryptococcus are not named on WHD's pages. They belong to the bacteria and fungi groups the product says it covers, and you can ask WHD for test data on any specific organism. We do not claim spraying removes worm eggs or larvae, Giardia cysts, Toxoplasma oocysts, mites or parvovirus, and rabies is prevented only by vaccinating animals and getting medical care after a bite.

Safety for pets: nothing is sprayed on animals. People and all pets must be out of the zone during application. Birds are very sensitive to airborne substances, so move cages out of the house before work starts; move or cover aquariums and switch off air pumps as the technicians advise. Remove bowls, pet food, toys and bedding first. Return when the technicians say, ventilate, and rinse bowls with clean water before use. We do not claim there is no residue. If a pet is unwell or has a chronic condition, ask your vet before bringing it back in.

WHD is based in Bang Khae, Bangkok 10160. Customers in Saraburi and other provinces can call 065-556-6294 or LINE @whd268 for an assessment and booking according to the team's schedule; there is no local branch and no promise of same-day visits. The current promotion includes a free CHEMGENE spray bottle and WELLGIENIC wet wipes, and tax invoices are available.

How the job runs

1. Survey: flood level, number and type of pets, and locations of cages, pens and litter trays.
2. Clean first: droppings and mud removed, surfaces washed and dried before any spraying.
3. Preparation: every animal moved out, especially birds and fish; pet food and supplies put away.
4. Spraying and ULV fogging: floors, lower walls, under furniture, pet sleeping areas and bathrooms.
5. Re-entry: according to the service information, wait about 30 minutes, then use the space normally, following the technicians' timing and ventilating before pets return.

10 reasons to book disinfection spraying in a pet household after a flood

1. Reduces bacteria on urine- and dropping-soiled surfaces after washing.
2. Covers sleeping and hiding spots that home cleaning misses.
3. Eases worries about germs left by rats that moved indoors.
4. Gives children who play with pets and crawl on floors a cleaner space.
5. A medical-grade, broad-spectrum disinfectant.
6. ULV mist reaches under sofas and behind cupboards.
7. Technicians plan pet relocation and zone order with you.
8. It follows washing, in line with WHO and CDC guidance.
9. The same service hospitals and schools use, according to the service information.
10. Advice by phone or LINE before you book.

Before and after spraying

Checklist for pet households after the Nong Khae flood, 2026 (2569)

• Take lethargic, non-eating or yellow-gummed pets to the vet.
• After any bite or scratch, wash for 15 minutes and see a doctor the same day.
• Clean up droppings and rat urine with gloves and boots.
• Replace litter and wash or discard flood-soaked pet beds.
• Move every animal, including birds and fish, out during spraying.
• Book vaccinations and deworming as the vet advises.

Frequently asked questions

My dog is sick after the flood. Can it spread to humans?

Some illnesses can, such as leptospirosis from dog urine, ringworm and gut bacteria like Campylobacter. Take the dog to a vet, wear gloves when caring for it and wash your hands.

Can dogs get leptospirosis?

Yes. Dogs that wade or drink floodwater are at risk. Signs include lethargy, vomiting, poor appetite, little urine and yellow gums, and their urine can infect people.

I was bitten by a dog during the flood. What should I do?

Wash the wound with soap and running water for about 15 minutes immediately, then see a doctor the same day to assess rabies and wound-infection risk.

Swollen lymph nodes after a cat scratch: what is it?

Possibly cat scratch disease caused by Bartonella, especially with fever or tiredness. See a doctor.

My child has an itchy red ring after cuddling the cat. Why?

It may be ringworm from cats or dogs, such as Microsporum canis. Take your child to a doctor and the pet to a vet.

Can cat diarrhoea after a flood infect people?

Some germs in cat droppings, such as Campylobacter, Salmonella and Giardia, can. Use gloves, wash hands, and pregnant women should not change litter.

What is a winding itchy rash on the feet after walking barefoot?

It may be creeping eruption from dog or cat hookworm larvae. See a doctor and wear shoes on soil after floods.

Is disinfection spraying safe in a home with dogs and cats?

Yes, provided every animal is outside the zone during application, nothing is sprayed on pets, bowls and food are removed, and pets return when the technicians say. Move birds and fish out first.

Will spraying cure my sick pet?

No. Spraying reduces germs on household surfaces; sick animals need a vet.

Is there a disinfection service near me in Nong Khae, Saraburi?

WHD is in Bang Khae, Bangkok, and takes provincial jobs according to its schedule. Call 065-556-6294 or LINE @whd268 for an assessment.

A pet household after the Nong Khae flood of 2026? Let WHD finish the job

After the vet, the mud removal and the washing, our technicians disinfect household surfaces, pet sleeping spots and rat hiding places so people and pets can live together in a cleaner home.

Ask about post-flood disinfection

Call 065-556-6294 | LINE @whd268

Related services

• WHD disinfection spraying service
• CHEMGENE HLD4H disinfectant
• Residential ozone disinfection for musty odours

References

• Government Public Relations Department, visit to Nong Rong, Nong Khae, Saraburi (1 Oct 2026): https://www.prd.go.th/th/content/category/detail/id/33/iid/547108
• Government Public Relations Department, DDPM data as of 7 Oct 2026: https://www.prd.go.th/th/content/category/detail/id/33/iid/548715
• World Health Organization fact sheets: https://www.who.int/news-room/fact-sheets
• CDC, Floods: https://www.cdc.gov/floods/
• Department of Disease Control, Thailand: https://ddc.moph.go.th/