Post-typhoon floodwaters raise cellulitis risk ninefold, doctors warn

The period following a typhoon presents a heightened risk of infection, particularly cellulitis, with medical experts warning that exposure to floodwaters can increase the likelihood of developing the condition by nine times. While the storm may have passed, the danger of infection often peaks days later, underscoring the need for continued vigilance.

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Typhoon aftermath is often the peak infection period.

Cellulitis occurs when bacteria enter the skin, often through small wounds. Floodwaters, contaminated with mud, sewage, and animal waste, harbor numerous bacteria that are not typically found on healthy skin. When skin is prolonged exposure to water, it softens and becomes more susceptible to bacterial invasion. Any break in the skin, no matter how small, can serve as an entry point for these pathogens.

Symptoms of cellulitis include redness, swelling, heat, and pain in the affected area, which can gradually spread. In severe cases, fever may accompany these symptoms. Medical professionals emphasize that self-treating with over-the-counter medication is often insufficient, as floodwater infections can involve multiple types of bacteria, including gram-negative bacilli, which may require stronger antibiotics than those typically used for common skin infections.

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People who waded through water have about a 9 times higher risk of developing cellulitis than those who did not.

Certain groups are particularly vulnerable to cellulitis. These include individuals with pre-existing skin conditions like athlete's foot, eczema, or chronic wounds; those with diabetes, whose high blood sugar levels impair immune function and can lead to nerve damage in the feet; patients with compromised immune systems due to chronic kidney disease, chemotherapy, or immunosuppressant drugs; individuals with poor circulation, such as those with peripheral artery disease or chronic lymphedema; and the elderly, whose skin is thinner and immune systems weaker. Those who are overweight are also at higher risk due to circulation issues and skin folds.

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The skin is like a wall that guards health 24 hours a day. When it's dry and intact, it can block bacteria from invading, but when it's soaked and softened, it creates gaps.

To mitigate the risk, experts advise avoiding wading through floodwaters whenever possible. If unavoidable, wearing waterproof boots instead of open footwear is recommended. Upon returning home, thorough cleaning and drying of the feet are essential. Any wounds should be disinfected and bandaged immediately to prevent further contamination. Prompt medical evaluation is advised if any signs of infection appear.

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Floodwaters are mixed with mud, sewage, and animal excrement, carrying a large number of bacteria that are rarely found on the skin.