Speakers - 2026

Title: Nematode larvae are highly prevalent in the environment of bangladesh, which is a health threat to animals, birds, and humans

Abstract

Drugs to combat helminths (anthelmintics) are used indiscriminately in Bangladesh. Anthelmintic resistance is reported worldwide. The true environmental burden of nematodes is hard to determine by traditional parasitological examinations. Decreasing contact of free-living stages of nematodes would be an important idea to reduce worm infections in animals and humans. The objective of the project was to determine the nematode parasitic larval load in the pasture in Tongi, Bangladesh. The pastures were selected in Tongi, Gazipur district, in places where cattle, sheep, and goats are grazed and in places where grass samples are collected for animals as daily feed. About 1000 g. of grass sample was collected from each pasture early in the morning. All the samples were examined fresh. The samples from each pasture were examined separately. The collected grass samples were examined by a Baermann apparatus. In all the pastures examined, there is a presence (100%) of nematode larvae. Year-round seasonal prevalence of nematode larvae was recorded. In the pastures, in all the seasons (summer, autumn, winter, and spring), there was a presence of nematode larvae (100%, range: 1423-2001). In non-pasture areas, in all the seasons (summer, autumn, winter, and spring), there was a presence of nematode larvae (100%, range: 654-907). This study reveals the condition of nematode parasitic larval infestation in the environment in Tongi, Bangladesh. The study will be helpful in the control of nematode infections in animals, birds, and humans.