Abstract

Cystic echinococcosis is a serious zoonotic disease caused by Echinococcus granulosus species complex. The current study is the first attempt to determine the level of infection in domestic livestock and to explore the CE-related knowledge and awareness among livestock farmers in different districts of Khyber Pakhtunkhwa, province of Pakistan. A total of 1297 animals were examined for hydatid cysts including 538 cows, 428 buffaloes, 208 sheep, and 123 goats, at different slaughter houses in different districts of Khyber Pakhtunkhwa in 2 years from September 2015 to September 2017. For epidemiological investigations, prevalence in association with various factors (climate, age, and gender), organ specificity, types of cysts (fertile, sterile, or calcified), and viability of cysts parameters was recorded. Basing on the results obtained, areas with high prevalence were selected for further follow-ups and administration of questionnaires to the farmers and dog owners, to provide baseline data about this parasitic disease and to identify potential areas of emergence with correspondence animal and of public health significance. The finding of this study revealed the presence of CE in livestock of KP, Pakistan. The prevalence of hydatid cysts was the highest in buffaloes (15.88%) followed by cows (15.79%), sheep (15.38%), and goats (3.25%). Our investigation revealed close relationship between prevalence and animal age and gender in different months of the year. These findings also showed the highest prevalence of hydatid cysts in liver (63.49%), followed by lungs (23.80%) and mesentery (2.64%). Fertile and viable cysts were observed in all animal species except goats. The highest percentage of fertile and viable cysts was reported from the liver and lungs of sheep. For evaluation of risk factors, a total of 384 respondents were investigated. The results of current study revealed that 97.9% of farmers are not familiar with CE and transmission of this infection from dogs to human and livestock. The present study shows that CE will continue to be of medical and veterinary importance in Pakistan.

Highlights

  • Cystic echinococcosis (CE) is a zoonotic parasitic disease, called “cystic hydatid disease” or hydatidosis caused by the larval stage of small tapeworms known as dog tapeworm of the genus Echinococcus [1]

  • E. granulosus life cycle is maintained by its definitive canid host, i.e., dogs that nourish the adult worm in their smaller part of their intestine while wide range of domestic livestock acts as an intermediate host

  • To the author’s knowledge, the current study is the first attempt that aimed to record the epidemiology of CE in domestic livestock in different localities of province Khyber Pakhtunkhwa, Pakistan, in addition to the determination of organ predilection for the cyst development and the fertility of cysts as well as viability of their protoscoleces

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Summary

Introduction

Cystic echinococcosis (CE) is a zoonotic parasitic disease, called “cystic hydatid disease” or hydatidosis caused by the larval stage of small tapeworms known as dog tapeworm of the genus Echinococcus [1] It is characterized by the development of cysts either unilocular or may be multilocular of different extents ranging from the medium sized football to the size of a pea [2]. For achieving an operative CE control program, it is vital to assess the level of understanding about the awareness of disease and its preventive measure and hazardous acts that spread the infection more rapidly within the community For these reasons, an investigation is conducted to explore the CE-related knowledge and awareness among livestock farmers in different localities of the above-mentioned province and to identify potential areas of emergence with correspondence animal and of public health significance by questionnaire based survey

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