Looking back to the strength of a people’s movement against filariasis Premium

History of filariasis combating strategies in India, particularly Kerala

The World Health Organization has sought to eliminate filariasis, globally, by 2030, a decade later than its original target of 2020. While India’s target year is now 2027, this deadline has been arrived at after several revisions: the National Health Policy had originally set the goalpost for 2015. Filariasis, clearly, has been difficult disease to eradicate.

While pioneering experiments by vector specialists over the years have helped India reduce its disease burden, consistent efforts are needed to eliminate the disease, reports have acknowledged. 

“Filariasis is the common term for a group of diseases caused by parasitic nematodes belonging to the superfamily Filarioidea. Adult worms of these parasites live in the lymphatic system, cutaneous tissues or body cavity of the humans and are transmitted through vectors”, explains a documents from the National Centre for Vector Borne Diseases Control.

Filariasis caused by nematodes that live in the human lymph system is called Lymphatic Filariasis (LF). The burden of lymphatic filariasis is massive in India, with as many as 670 million persons at risk for the disease, according to a report published in the Indian Journal of Medical Research in 2022. 

While the disease has been around for decades in India, there still exist many misconceptions about it, says S. Sabesan, former director of the Indian Council of Medical Research -- Vector Control Research Centre, Puducherry.

Kerala  was instrumental in spotlighting filariasis in India. In 1984-85, a group of filariasis affected persons in Alappuzha formed an association, and its president contested the general election that year, aiming to attract the attention of politicians and bureaucrats. It bore fruit. A Member of Parliament from Kerala S. Krishna Kumar, became the deputy minister in the Union Health Ministry. He called for action against filariasis in Kerala, which set the ball rolling, recalls Dr. Sabesan. 

Kerala’s culture of associations helped to further the project of eliminating filariasis, he says. All associations were amassed under the umbrella of the Filariasis control movement or ‘Filco‘ movement. The project targeted removing floating vegetation where mosquitoes that cause the disease breed. The mosquitoes lay eggs on leaves and the larvae absorb oxygen from the air sacs in the roots of the plants. Understanding the breeding pattern of the mosquitoes helped remove the floating vegetation, which was then placed as manure in coconut groves.