Mosquito Prevention Tips: This is when a mosquito bite can turn lethal

Avoid stagnant water around the house — in plant trays, buckets, or open containers — as these serve as breeding grounds for mosquitoes

By: Lifestyle Desk

New Delhi | Updated: April 7, 2025 05:52 PM IST

3 min read

How to prevent mosquito bites? (Source: Freepik)

Sitting in your balcony or strolling around the terrace on hot summer nights comes with the buzzing cacophony of mosquitoes. Your attempts to swat them away with deft hands fall short as a couple of persistent ones catch you off guard and sink their teeth in. Thinking nothing of the mild itching and swollen bump, you move on with your day — but do you know that all it takes is one bite to endanger your life?

When can a mosquito bite turn lethal?

“Mosquito bites themselves aren’t fatal, but the diseases they transmit can be. A single mosquito bite is enough to infect someone with dangerous diseases like malaria, dengue, chikungunya, Zika virus, or Japanese encephalitis. If left untreated or if the person is immunocompromised, these illnesses can become life-threatening,” said Dr Shalmali Inamdar, Consultant, Physician And Adult Infectious Diseases, Kokilaben Dhirubhai Ambani Hospital Mumbai.

Even one bite from an infected mosquito can be fatal — it’s not about the number of bites, but whether the mosquito is carrying a pathogen, she said.

Dr Suchismitha Rajamanya, lead consultant and HOD, internal medicine, Aster Whitefield Hospital, Bengaluru, concurred that the number of mosquito bites needed to kill a person depends on the disease they carry, not the number of bites. “One bite by an infected mosquito can spread fatal diseases such as malaria, dengue, or yellow fever. Excessive mosquito bites can, in some extreme cases, cause allergic reactions, but this is a very rare occurrence,” she said.

Dr Rajamanya further explained that mosquito bites can be lethal when they spread diseases such as malaria, dengue, Zika, chikungunya, and yellow fever. These diseases can lead to extreme complications, including organ failure, haemorrhagic fever, and shock, particularly in people with low immunity. Malaria and dengue are especially fatal if left untreated.

Can mosquito bites kill you? (Source: Freepik)

What can you do to prevent mosquito bites?

Dr. Inamdar and Rajamanya shared several effective ways to protect yourself:

Use mosquito repellents—creams or sprays—especially when outdoors. You can also apply insect repellents made with DEET, picaridin, or lemon eucalyptus oil.
Wear long-sleeved clothing in the evenings or mosquito-prone areas.
Avoid stagnant water around the house — in plant trays, buckets, or open containers — as these serve as breeding grounds for mosquitoes.

ALSO READ | Effective remedies to stop mosquito bites from itching

Install mesh screens on windows and doors, and use mosquito nets, especially during the evening and night.
Use indoor mosquito repellents like coils, vaporizers, or plug-ins to keep them at bay.
Indoor residual spraying and insecticide-treated bed nets are essential in areas where malaria is endemic.

Ultimately, prevention is the key — avoiding a bite’s much easier than treating a serious mosquito-borne illness.

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DISCLAIMER: This article is based on information from the public domain and/or the experts we spoke to. Always consult your health practitioner before starting any routine.

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