Molecular Characterization of in Cats and Its Zoonotic Potential for Public Health Significance

Overview

Journal Pathogens

Date 2022 Apr 23

PMID 35456112

Authors

Mian Abdul Hafeez

Muntazir Mehdi

Faiza Aslam

Kamran Ashraf

Muhammad Tahir Aleem

Abdur Rauf Khalid

Adeel Sattar

Syeda Fakhra Waheed

Abdulaziz Alouffi

Omar Obaid Alharbi

Muhammad Abu Bakr Shabbir

Umer Chaudhry

Mashal M Almutairi

Affiliations

Soon will be listed here.

Abstract

Toxoplasmosis is a globally distributed disease of warm-blooded animals. It is caused by the opportunistic parasite (). One-third of the global human population is believed to be infected with . Cats serve as final host of and are the main source of contamination of soil and water. This study aimed to detect genotypes of in cats. Fecal samples (n = 400) were collected from districts of South Punjab (Khanewal and Sahiwal), and were processed by polymerase chain reaction (PCR) followed by sequencing and phylogenetic analysis. The obtained oligonucleotide sequences () were submitted to the GenBank database, and the evolutionary tree was constructed using MEGA-X software. Seven fecal samples (3.5%) from cats were positive. Five out of thirteen fecal samples (38.46%) found to be positive for with microscopy were confirmed by PCR. After phylogenetic analysis with 3 clonal types and atypical strains, isolates of in current study were more closely linked to a typical strain (AF249696). Besides genotyping from cats, seroprevalence from humans and ruminants is still considered to be the best and easiest way to identify the . Blood samples were collected from sheep and goats (n = 2000 each), and human blood samples (n = 400) were collected from the same vicinity. Seroprevalence was determined using a commercial enzyme-linked immunosorbent assay (ELISA) kit. In Khanewal, the blood samples of 292 goats (29.2%) and 265 sheep (26.5%), and 6 fecal samples from cats (3%) were positive. Out of 200 human blood samples, 52 were positive, with a seroprevalence of 26%. In the Sahiwal district, the blood samples from 49 humans, 235 sheep and 348 goats were positive, with seroprevalence of 24.5%, 23.5% and 34.8%, respectively. The present study revealed the current circulating genotype of from cats in the districts Khanewal and Sahiwal and the seroprevalence of the organism in small ruminants and humans living in the same vicinity. Further genotype analyses of the organism from ruminants and humans are needed.

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