Post-Flood Actions

Floods can cause


  1. Water-borne Diseases


  1. Typhoid
  2. Cholera
  3. Hepatitis A
  4. Leptospirosis
  5. Vector-borne Diseases


  1. Malaria
  2. Dengue
  3. Yellow Fever



Cholera –

  • Kindly take care of Cholera as it is endemic to India: the WHO estimates roughly 25,000 cases a year, with a fatality rate of 1%.
  • It is caused by drinking water or eating food contaminated by the Cholera bacteria.
  • Symptoms include profuse watery diarrhea and vomiting.
  • Without treatment, death can occur within hours.
  • Common treatment is replacement of lost fluids and electrolytes using oral rehydration solution.

Leptospirosis –

  • In 2005 Mumbai most of the deaths was due to Leptospirosis.
  • Caused by exposure to water contaminated with animal urine: many people had to wade through neck-deep contaminated water to get to safety.
  • The symptoms are high fever, severe headaches, muscle pain, chills and vomiting.

Malaria, Dengue and Other Vector-borne Diseases

  • Caused after 10 – 15 weeks of flooding. Kindly be in the lookout for high fever or vomiting for the entire month.
  • Methods to prevent diseases –

The key to preventing a health catastrophe is basic hygiene: i.e. clean and safe water and toilets.


  • Use clean drinking water.
  • Wash hands well with soap and clean water.
  • Water can also be purified by boiling or treating with chlorine.
  • Wash any unpackaged food in clean water. Avoid any food that may have come into contact with contaminated flood water.
  • Wash all clothing that has been in contact with contaminated flood water.
  • Disinfect all children’s toys that have been in contact with contaminated flood water.
  • Vaccinate against hepatitis A.
  • Wash hands well with soap and clean water.
  • Wear long sleeves, long pants, and socks when outdoors.
  • Put screens on open windows and use nets over beds.
  • Drain standing water.
  • Drain standing water.

Other Hazards –

  1. Electric Power Systems –
  • One should avoid turning on or off the main power while standing in the remaining flood water.
  1. Gas Leaks
  2. Flood debris – such as broken bottles, woods, stones and walls – may also cause fresh wounds and injuries
  3. Moulds and Dust
    1. Can be formed in 24 – 48 hours in wet areas.
    2. Will be present in fans and AC vents and will be inhaled by residents unless properly cleaned.
  4. Wound Infections
    1. Avoid exposure of wound to flood waters.
    2. Cover with water-proof bandages
    3. Clean wounds by using soap and water
    4. Seek immediate medical attention if there is redness or swelling.
  5. Other Preventive Methods
    1. Wash clothes contaminated with flood or sewage water in hot water and detergent
    2. Thoroughly clean all hard surfaces (such as flooring, concrete, molding, wood and metal furniture, countertops, appliances, sinks, and other plumbing fixtures) with hot water and laundry or dish detergent.
    3. Remove and discard items that cannot be washed and disinfected
    4. Keep children and pets out of the affected area until cleanup has been completed.
    5. Have your onsite waste-water system professionally inspected and serviced if you suspect damage.




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