Mumbai Monsoon: Brain-Infecting Tapeworm On The Rise; Know Symptoms, Prevention Tips

As Mumbai battles heavy monsoon downpours and flooding, medical professionals are raising alarm over an increase in neurocysticercosis cases-a serious brain infection caused by the pork tapeworm Taenia solium. This condition is now becoming a seasonal health threat, especially in areas where sanitation and food safety are compromised.

What is Neurocysticercosis?

Neurocysticercosis is a parasitic brain infection triggered by the larvae of the pork tapeworm. It doesn't come from the adult worm itself, but rather from its microscopic eggs, which can enter the human body through contaminated food, water, or poor hygiene practices. Once inside, these eggs hatch and the larvae may migrate through the bloodstream to vital organs-including the brain, where they form cysts, leading to neurological complications.

Here's a medical case that will shock you!!

This poor elderly woman had no idea she was infested with pork tapeworm with cysts throughout all of her muscle tissues and in her brain. 😬

Avoiding direct exposure to infected animals, not eating meat, and consuming anti-parasitic… pic.twitter.com/meaPtSsLla

— The Vegan Nutritionist Ⓥ (@vegannutrition1) March 2, 2024

How the tapeworm infects the brain?

The infection starts as taeniasis, an intestinal condition caused by consuming undercooked or infected pork. However, neurocysticercosis occurs when a person ingests Taenia solium eggs-often unknowingly-via contaminated vegetables, water, or unwashed hands. The larvae escape the intestines, lodge in the brain tissue, and form fluid-filled cysts that can trigger inflammation, pressure, and irreversible damage if left untreated.

Floodwaters and overflowing drains common during Mumbai’s rainy months make it easier for sewage to mix with water sources and spread contaminants. These unhygienic conditions drastically increase the risk of tapeworm transmission, especially in densely populated areas where food hygiene is difficult to enforce.

This CT scan shows a patient with cysticercosis, an infection caused by the larval stage of the Taenia solium tapeworm parasite.

The infection occurs when eggs from the feces of a human tapeworm carrier are ingested.

These eggs are infectious right away and do not need any… pic.twitter.com/OuL0pXtdyN

— Morbid Knowledge (@Morbidful) August 23, 2024

Symptoms to watch out for

Neurocysticercosis can remain asymptomatic for months or even years. But once cysts form in the brain, they may cause:

1. Recurrent seizures (a leading cause of adult-onset epilepsy in India)

2. Intense, chronic headaches

3. Nausea and vomiting

4. Confusion and memory issues

5. Vision disturbances or loss of balance in severe cases

Children and individuals with compromised immune systems are especially at risk of developing life-altering complications.

Preventive measures

To protect yourself and your family from this potentially disabling infection, especially during the monsoon, follow these essential guidelines:

1. Cook pork thoroughly – Ensure it’s fully cooked to kill any larvae.

2. Practice strict hand hygiene – Wash hands before meals and after using the toilet.

3. Wash fruits and vegetables well – Especially those eaten raw.

4. Drink purified or boiled water – Avoid street-side or untreated water sources.

5. Buy meat from reliable vendors – Certified, hygienic sources reduce infection risk.