Read This Before You Start Recovery

• DDPM data at 06:00 on 2 October 2026, as reported by Krungthep Turakij (Bangkok Biz News), showed flooding in 2 Yasothon districts, Kham Khuean Kaeo and Pa Tio, covering 5 subdistricts, 12 villages and 243 households, with water levels falling.
• The report gives no subdistrict or village names and no water depths, so we do not guess them.
• When the water drops, everyone returns at once and comes into contact with mud, possibly contaminated stored water and damp rooms.
• Number one is faecal bacteria in stored drinking and household water, number two is Leptospira in the mud, number three is mold on walls and mattresses.
• The order is: shovel, wash, dry, then disinfect, with people and pets out during spraying.
• WHD is in Bang Khae, Bangkok, with no branch in Yasothon. Book on 065-556-6294 or LINE @whd268; travel dates follow the real job queue.

Example Case: A Grandmother and Two Grandchildren the Day the Yard Dried Out

This is an illustrative scenario based on situations common in rural villages after floods. It does not refer to any real person or to any specific village in the DDPM report.

Grandma Kham looks after two grandchildren, one aged three and one who has just started school. During the flood the three of them stayed at a relative's house on higher ground for nearly a week. Grandma's home is a raised wooden house. The open space underneath is where the family sits in the afternoon, stores rice sacks and keeps three rainwater jars. As soon as she heard the water had gone down, she brought the children home so they could sleep in their own beds.

The space under the house was coated with thin mud and smelled stale. Two jars had cloudy floodwater mixed in. The third had its lid on, but the rim was muddy. Grandma used water from the lidded jar to wash vegetables and cook rice. The little one crawled on a mat that had just been aired and laid down again, and the older child splashed happily through a puddle beside the house.

Two days later the youngest had diarrhoea and was vomiting, the mattress upstairs had green mold spots in one corner, and Grandma had a morning cough and blocked nose. This can happen in any home where people move back before cleaning is complete, and it is why a ranking for the receding phase puts stored water, young children and damp ahead of the risks that dominate while water is still high.

In this situation the youngest child needs oral rehydration salts and a doctor's visit, especially if drowsy, passing little urine or running a high fever.

Where the Flooding Hit in Kham Khuean Kaeo and Pa Tio: What DDPM Reported

This section uses only Krungthep Turakij's report of DDPM data at 06:00 on 2 October 2026. Figures change daily, so follow notices from the districts, the provincial administration and Yasothon's disaster prevention office as well.

• Kham Khuean Kaeo district, Yasothon and Pa Tio district, Yasothon were the two districts reported flooded.
• In total, 5 subdistricts, 12 villages and 243 households, as a provincial figure at the time of the report.
• At that time, water levels were falling.

The report does not split figures by district, name villages, or give depth or detailed causes. We have not added any, and we use a clearly labelled example case instead to explain risks common in rural villages.

For context, DDPM data at 06:00 on 5 October 2026, reported by Daily News, listed 26 provinces plus Bangkok affected, totalling 1,270,151 households nationwide.

How We Ranked Post-Flood Germs for Kham Khuean Kaeo and Pa Tio

The defining feature here is that the water is receding. People are moving back, cleaning, reusing stored water and caring for children and older relatives who sleep at home again. Our criteria:

1. Relevance to the post-flood period in general WHO, CDC and Department of Disease Control guidance.
2. Routes of transmission at home: drinking and household water, food, hands, surfaces and air in damp rooms.
3. Vulnerable people in rural households: young children, older adults, pregnant women and people with chronic illness.
4. Severity without care.
5. Persistence in a damp home, described qualitatively without unsourced numbers.
6. Practical prevention through washing, drying and disinfection.

This is not an official ranking and does not reflect real local case numbers. It simply helps each household decide where to start.

Post-Flood Germs Ranked for Kham Khuean Kaeo and Pa Tio: 8 Risks in the Receding Phase

1. E. coli and Faecal Bacteria in Stored Water (Escherichia coli, Shigella)

Why first in this phase: many rural homes keep rainwater in jars, use wells, or rely on village piped water through holding tanks. When floodwater passes septic pits and animal pens, uncovered or loosely covered containers can be contaminated. As the water recedes, every household goes back to using this water for rice, vegetables and baby formula. E. coli signals faecal contamination and Shigella causes dysentery, so they top the list now.

Where they hide: jar water, jar rims and lids, dippers, holding tanks, taps, baby bottles, chopping boards and kitchen floors reached by mud.

Symptoms and risk: loose stools, stomach pain, nausea, vomiting, sometimes fever or bloody stools. Young children and older adults dehydrate quickly.

Prevention: if unsure whether jar water is contaminated, assume it is. Use bottled or boiled water for drinking and cooking, clean jars and tanks as health workers advise before refilling, and wash hands with soap before preparing food.

Where spraying fits: spraying is for indoor surfaces such as kitchen floors, walls, bathrooms and the space under the house after washing. It does not disinfect drinking water. E. coli and Shigella fall in the bacteria group CHEMGENE HLD4H product information says it covers, but no organism-specific results are listed on the website; ask the team for documents.

2. Leptospira in the Mud You Shovel Out

Why second: shovelling mud and hauling wet belongings keeps hands and feet in contact with soil and standing water for days. Rats escaping the flood often move into houses and rice stores, so their urine ends up in mud and puddles. The Department of Disease Control warns about leptospirosis after every flood, especially for people who wade or clean without protection.

Where it hides: mud under the house, puddles beside it, stacked rice sacks, storeroom corners and abandoned footwear.

Symptoms and risk: sudden high fever, headache, severe calf pain, red eyes, sometimes yellow skin or low urine, usually days after contact. Children who play in puddles are at risk too.

Prevention: boots and rubber gloves when shovelling, keep children out of standing water, cover wounds, wash after work and see a doctor for fever.

Where spraying fits: Leptospira is a bacterium within the group the product says it covers, without an organism-specific result on the website. WHO and CDC advise cleaning and then disinfecting surfaces floodwater touched, so spraying under the house and in storerooms after mud removal follows that advice.

3. Mold on Wooden Walls, Mattresses and Rice Sacks (Aspergillus, Penicillium, Cladosporium, Stachybotrys)

Why third: the receding phase is when mold grows fastest, because the house is still damp but people close it up and move back. WHO and CDC advise drying wet areas as fast as possible, generally within about 24 to 48 hours. Beyond that, mold often appears on absorbent materials like wood, mattresses, curtains and paper.

Where it hides: inner wooden wall panels, behind wardrobes, mattresses and pillows, mosquito nets, rice sacks and straw, beneath floors and in document boxes.

Symptoms and risk: sneezing, blocked nose, cough, eye and throat irritation. Children with allergies, people with asthma and older adults with lung disease are most affected.

Prevention: sun-dry or discard mattresses, pillows and fabrics, open the house for airflow, use fans, scrub mold off wood with water and cleaner while wearing a mask and gloves, and never paint over it.

Where spraying fits: WHD's service information says the disinfectant covers fungi in general. After scrubbing and drying, spraying treats surfaces where mold is not yet visible. For rooms that still smell musty, the residential ozone disinfection service can be an optional extra, but moisture must be fixed first.

4. Rotavirus and Norovirus in Young Children

Why fourth: toddlers back on the floor, putting things in their mouths and drinking from bottles washed in doubtful water easily pick up diarrhoeal viruses. Rotavirus is a major cause of diarrhoea in young children, and norovirus spreads very fast in homes where many people share a toilet. Both survive on surfaces for a long time.

Where they hide: crawling areas, toys, bottles, toilet door handles, taps and hand towels.

Symptoms and risk: vomiting, watery diarrhoea, fever and stomach pain. Watch young children for drowsiness, a dry mouth and low urine.

Prevention: frequent handwashing, especially after nappy changes, washing flood-touched toys, clean water for formula, and asking a doctor about rotavirus vaccination for children of the right age.

Where spraying fits: norovirus is named in WHD's product information. Rotavirus is not named, so it sits in the virus group the product says it covers, and test data can be requested. Spraying bedroom and bathroom floors and play corners after cleaning reduces spread at home. Toys that go in mouths should be rinsed with clean water as the technicians advise before use.

5. Hepatitis A Virus from Contaminated Food and Water

Why fifth: hepatitis A spreads through food and water contaminated with faeces, and WHO links it to poor sanitation and unsafe water. After a flood, when water supply and toilets are not yet back to normal, the risk rises. Many adults may already be immune, but caution is still wise.

Where it hides: raw vegetables washed in unsafe water, ice, food made in uncleaned kitchens, and hands not washed after the toilet.

Symptoms and risk: tiredness, poor appetite, nausea, fever, pain under the right ribs, yellow skin and eyes, and dark urine, usually weeks after infection. Adults often feel worse than children.

Prevention: freshly cooked food, clean water, soap handwashing, and a conversation with a doctor about vaccination where appropriate.

Where spraying fits: this virus is not named on the website, so it falls in the virus group the product says it covers; ask for test data first. Spraying bathrooms and kitchens after cleaning helps, but cooked food, safe water and handwashing matter most.

6. Burkholderia pseudomallei in Northeastern Soil

Why sixth: this bacterium lives naturally in the soil and water of northeastern Thailand and causes melioidosis. Sediment the flood left around and under houses is what people now handle. We place it sixth because most work in this phase is indoors, but people with diabetes must still take great care.

Where it hides: sediment around the house, kitchen gardens, under the house and in puddles.

Symptoms and risk: fever, abscesses, non-healing wounds, cough or pneumonia. Diabetes, kidney disease and regular heavy drinking raise the risk of severe illness.

Prevention: boots and gloves when shovelling, a mask when sweeping dried sediment, and always telling your doctor about soil contact after the flood.

Where spraying fits: get as much sediment out as possible and wash floors; spraying then treats indoor surfaces. The germ is in the bacteria group the product says it covers, without an organism-specific result online, and spraying does not treat natural soil outside.

7. Respiratory Viruses in Crowded, Damp Homes (RSV, Influenza)

Why seventh: during floods many families shelter together with relatives or at temporary sites. Back home, people are tired and sleep in stuffy, damp rooms. RSV and influenza spread through coughs, sneezes and shared surfaces, and young children and older adults are at greater risk of severe illness.

Where they hide: dining tables, shared cups, blankets, pillows, stair rails and mobile phones.

Symptoms and risk: fever, cough, runny nose, sore throat, fast or wheezy breathing in small children. Older adults and people with lung or heart disease should see a doctor early.

Prevention: wash hands often, wear a mask when sick, keep personal items separate, ventilate the house, and ask a doctor about flu vaccination for at-risk groups.

Where spraying fits: RSV and influenza H1N1 are named in WHD's service information, so spraying shared surfaces after cleaning helps cut spread, especially in homes with small children and older adults.

8. Skin Fungus and Bacteria (Dermatophytes, Staphylococcus aureus)

Why eighth: long soaking during cleanup softens skin, causing immersion foot, itchy rashes and scrapes, which fungi and bacteria such as Staphylococcus can then infect. Usually not serious, but disruptive to daily life and work.

Where they hide: shared towels, footwear that never dries, doormats and permanently wet bathroom floors.

Symptoms and risk: itching, peeling, soggy skin between toes, red rashes, or swollen wounds with pus. People with diabetes must watch foot wounds closely.

Prevention: wash and dry feet after wading, do not share towels, keep wounds clean and see a pharmacist or doctor if things do not improve.

Where spraying fits: these organisms are in the bacteria and fungi groups the product says it covers. Spraying bathrooms and shoe areas after cleaning reduces household spread; test data is available on request.

Why the Receding Phase Is Riskier Than It Looks

Everyone moves back at once into homes not yet fully clean. Stored water may be contaminated, wooden houses take days to dry while mold grows, and exhausted families often skip disinfection.

Why Detergent or Bleach Alone May Not Be Enough

• Detergent and floor cleaner remove dirt and cut germ numbers a lot, but they are not designed to disinfect a whole house.
• Wooden houses have gaps and joints between boards, under floors and behind furniture that wiping cannot reach.
• Bleach must be mixed correctly. Too strong irritates airways and is unsafe for children; too weak does nothing. Never mix it with toilet cleaners or ammonia, and remember it works poorly on muddy surfaces.
• Incense or air freshener masks the smell but does not kill mold or bacteria.

The common rule is: remove dirt, disinfect, then dry. Professional spraying follows washing and never replaces it.

WHD Post-Flood Disinfection Spraying for Homes in Kham Khuean Kaeo and Pa Tio

World Health Disinfection's disinfection spraying service uses trained technicians who spray and/or ULV-fog (Ultra Low Volume fine mist). According to the service information, the disinfectant is CHEMGENE HLD4H, a medical-grade product from the UK containing Benzalkonium Chloride and Didecyldimethylammonium Chloride, described as broad-spectrum against viruses, bacteria and fungi. Named examples include COVID-19, RSV, influenza H1N1 and H5N1, hand-foot-mouth virus, norovirus and Salmonella, with a stated 99.99% efficacy; the product page states 99.85% against COVID-19 within 1 minute.

The service page lists the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019, and clients such as hospitals, schools, malls, airports, offices, airlines, banks and residential buildings. Customers get a free CHEMGENE spray bottle and WELLGIENIC wet tissues, and a tax invoice is available.

Germs in this article not named on the website, such as E. coli, Shigella, Leptospira, rotavirus, hepatitis A, Burkholderia and skin fungi, are placed within the virus, bacteria or fungi groups the product says it covers, and test data is shared on request.

Service in Yasothon: WHD's office is in Bang Khae, Bangkok 10160, with no branch in Yasothon. Jobs in Kham Khuean Kaeo and Pa Tio are booked on 065-556-6294 or LINE @whd268. The team assesses photos and details and gives a travel date based on its queue, so same-day arrival is not promised. Several homes in one village can book together to make travel planning easier.

Five Steps

1. Send photos of bedrooms, kitchen, bathroom and the space under the house via LINE @whd268.
2. Shovel, wash and dry first, removing mattresses, fabrics and damaged items and opening the house to airflow.
3. Prepare the zone: children, older adults, pets, food and drinking water leave; cover jars and water containers.
4. Spray floors, walls, board gaps, bathrooms and under the house.
5. Re-enter after about 30 minutes per the service information, following the technicians on the day. We do not claim "no residue"; ventilate and rinse food-contact surfaces and children's toys as advised.

10 Reasons to Spray After the Water Recedes

1. Everyone, including small children and older adults, is moving back now.
2. The space under the house and the kitchen met water from septic pits and pens; post-flood disinfection spraying completes the cleanup.
3. ULV mist reaches board gaps that cloths miss.
4. It treats surface mold once the house dries, easing musty bedroom smells.
5. It reduces spread of diarrhoeal and respiratory viruses in busy homes.
6. Medical-grade disinfectant used in hospitals and schools.
7. Trained technicians zone areas safely for children and pets.
8. Clear times to leave and return.
9. Less burden on families juggling many recovery tasks.
10. Free advice and tax invoices via the service page.

Before and After: A Raised Wooden House (Example Case)

Receding-Phase Recovery Checklist

• Check structure and wiring first; have an electrician inspect before switching on.
• Keep small children and older adults somewhere safe until the house is clean.
• Boots, rubber gloves and a mask; watch for snakes.
• Treat jar and well water as contaminated; drink bottled or boiled water.
• Discard flood-touched food, medicine and toys that cannot be washed.
• Sun-dry or discard mattresses, pillows and fabrics; wash floors and walls; ventilate.
• Book spraying once clean and drying, with people, pets, food and drinking water out and containers covered.
• Watch for fever, calf pain, diarrhoea, yellow skin or breathlessness for several weeks and see a doctor if they appear.

Frequently Asked Questions

Why isn't leptospirosis first here? Because the reported situation is the receding phase, when families reuse stored water and children return home, so contaminated water comes first. Leptospirosis remains very important at number two.

After spraying, can we use jar water? No. Spraying treats indoor surfaces, not water. Empty and clean flood-reached jars and drink bottled or boiled water.

We have a toddler. What extra care is needed? Keep the child out during spraying, return on the technicians' timing, rinse toys and crawling areas as advised, and watch for diarrhoea or fast breathing.

Our village is not in the DDPM report. Does this apply? Yes. The germ knowledge and cleaning steps apply to any flooded home.

Can you come to Yasothon? Yes, by appointment on 065-556-6294 or LINE @whd268, travelling from Bangkok.

Can I see test data for a specific germ? Yes, ask on LINE @whd268 and name the organism.

Make Homes in Kham Khuean Kaeo and Pa Tio Ready for the Family Again

See the Disinfection Spraying Service

Call 065-556-6294 · LINE @whd268

Related Links and References

• WHD Disinfection Spraying Service
• Residential and Building Ozone Disinfection
• Krungthep Turakij, DDPM data 06:00, 2 Oct 2026: bangkokbiznews.com/news/news-update/1254629
• Daily News, DDPM 5 Oct 2026: dailynews.co.th/news/6249374
• Department of Disease Control · CDC Floods · WHO