5 common diseases after storms and floods

Conjunctivitis, trachoma; dengue; skin diseases such as hand and foot fungus; respiratory and digestive diseases… may appear after typhoon Noru hits.

On the morning of September 28, Typhoon Noru made landfall in Da Nang – Quang Nam area with heavy rain, causing many areas to be flooded. The Ministry of Health warned of the following 5 diseases that may appear after storms, advising people to proactively prevent and avoid.

Eye ache

According to Dr. Hoang Cuong, Head of Social Work Department, Central Eye Hospital, diseases such as conjunctivitis and trachoma usually occur about 10 days after the storm. The reason is that the eyes must come into contact with dirt and toxic substances; microorganisms that cause eye diseases thrive due to a humid environment; People lack clean water to use. The high-risk groups for the disease are children under 15 years old and adults over 65 years old.

In particular, conjunctivitis is caused by adenovirus, symptoms include red eyes, rusty eyes mixed with water, accompanied by a feeling of foreign objects in the eyes. The disease can also cause painful swelling of the lymph nodes in front of the ear, conjunctiva, eyelid cartilage with raised granules, other manifestations such as slight fear of light, swelling of the conjunctiva…

Trachoma tends to be persistent, painful, and life-threatening. The disease causes enlargement of both the upper and lower eyelid conjunctiva. If treated incorrectly or do not stop ddieemer, the inflammatory granules in the eye will last for several months, then burst and leave scars in the conjunctiva, dry eye sequelae. In addition, there are sequelae of ingrown toenail, drooping hair, which is a condition where the eyelids or eyelashes are in the wrong position, directed at the eyeball, causing eye damage.

If you use dirty water, dirty towels, shared sinks, or have to come into contact with many mosquitoes, mosquitoes, trachoma will get worse, entangled hairs and hairs will poke you, causing corneal ulcers, scarring or perforated ulcers.

Conjunctivitis can be treated by cleaning the eyes with physiological saline, antibiotic drops or using antibiotics with anti-inflammatory agents for a short time. After 7-10 days, the disease will be relieved and completely cured. If the disease lasts longer than this time accompanied by fear of light, glare, blurred vision, people should go to a specialist facility for examination immediately because the disease has complications.

And trachoma needs regular eye cleaning and abstinence to avoid re-infection, using antibiotic drops or oral. The disease will go away after 4-6 weeks of treatment.


Rainstorms make the air humid, which is a favorable condition for mosquitoes that transmit dengue fever to breed. The patient may have a fever that lasts for 2-7 days continuously, in which the risk of worsening is high from the 4th day. In addition, the patient may have headache, eye socket pain, body pain, rash…

Dengue fever has no vaccine or specific treatment. Preventive measures are mainly to kill larva by treating water containers (to eliminate the larva’s habitat), cleaning the house regularly, wearing long sleeves, using mosquito repellent cream, spraying. mosquito repellent in high-risk areas, sleeping under nets both during the day and at night…

Hemorrhagic spots on the leg of a female patient with dengue fever on day 6. Photo:English Letters

Skin disease

The Ministry of Health recommends that people pay attention to prevention and control of skin diseases such as foot and hand fungus, pore inflammation, ringworm, ringworm, scabies, and boils. The reason is that rain water contains chemicals, toxic gases and pollution, so it is easy to cause skin diseases.

Therefore, the Ministry of Health recommends people not to bathe and wash clothes with dirty water. If disinfected well water is not available, people need to alum or filter the water with sand. People do not wear wet clothes because this is an environment for bacteria and fungi to grow.

People do not swim, bathe or play in flooded water because the water is very dirty, in addition to causing skin diseases, it also causes gastrointestinal diseases. Avoid wading into stagnant dirty water. If you must wade into dirty water, wash immediately with clean water and dry, especially between your fingers and toes.

Respiratory and digestive diseases

Colds, flu, respiratory infections, sore throats, diarrhea caused by ecoli, dysentery, cholera, typhoid, hepatitis A… are also likely to appear in the rainy season due to the wet weather. To prevent this, the Ministry of Health advises people to keep warm and limit contact with people with flu and respiratory infections.

The elderly, young children, and people with chronic diseases are at high risk of infection due to poor resistance. Therefore, this group needs to pay attention to supplementing with adequate nutrients, especially vitamins, protein, sugar, and fat. People should notify and seek help from a doctor if there are symptoms such as vomiting, nausea, loose stools…

Besides ensuring nutrition and resistance, people pay attention to the treatment of drinking water, environmental and personal hygiene; eating and drinking cooked food, ensuring food safety and hygiene. Drink or vaccinate against diseases when indicated for diseases for which there are vaccines.



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