How do watermelons become contaminated and turn dangerous?

A slice of watermelon feels like the safest thing you can eat in peak summer. But a recent tragedy in Mumbai has shaken that assumption. After a family reportedly fell critically ill and died following suspected food poisoning, attention has turned to watermelon. So, how can a fruit get contaminated and turn dangerous?

How Does Watermelon Get Contaminated?

Watermelon isn't unsafe by default. But under certain conditions, it can become a carrier of harmful bacteria or chemicals. Watermelon's composition is part of the problem. Its high water and natural sugar content create an environment that allows bacteria to grow rapidly in the event of contamination. Once cut open, it becomes even more vulnerable. If the knife, hands, or surface used are unclean, bacteria can transfer directly into the fruit.

During transportation, storage, or display, watermelons may come into contact with contaminated surfaces, dirty crates, or unclean hands. The danger occurs when the fruit is tainted with dangerous bacteria like Salmonella, Listeria, or pathogenic strains of E. coli. These infections can lead to severe dehydration, systemic infection (sepsis), or complications affecting vital organs. In extreme cases, especially without timely treatment, this can turn fatal.

Every summer, viral videos show watermelons allegedly being injected with sugar water or glucose to enhance sweetness and colour. This can be dangerous as it can further increase bacterial growth.

Leaving cut watermelon at room temperature for hours is also a common mistake. Warm conditions, moisture, and sugar are a perfect breeding ground for microbes. Watermelons can also pick up contamination during farming. Exposure to certain chemicals like organophosphates (used in agriculture) can affect the nervous system and may lead to severe symptoms if ingested in high amounts.

How to stay safe?

It is suggested that a person should choose a watermelon that feels heavy for its size and gives a slightly hollow sound. People should avoid ones with shiny surfaces since there are signs that it might be chemically treated.

A natural watermelon has a slightly uneven red or pink shade with visible fibres.A fake or chemically treated watermelon may appear unnaturally bright red, almost glowing, with little to no variation in colour.If the colour looks too perfect or artificial, it’s worth being cautious.

Also, washing the outer rind thoroughly before eating is essential. One should also soak it in baking soda solution for a while before eating to help it get clean.

One should always be careful and should look carefully while buying watermelons to avoid health problems.