scholarly journals Seroprevalence and risk factors of Neospora caninum infection among domestic sheep in Henan province, central China

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 15 ◽  
Author(s):  
Shuai Wang ◽  
Lingjuan Li ◽  
Yi Lu ◽  
Haizhu Zhang ◽  
Qing Xie ◽  
...  
Keyword(s):  
Risk Factors ◽  
Neospora Caninum ◽  
Henan Province ◽  
Central China ◽  
Enzyme Linked Immunosorbent Assay ◽  
Domestic Sheep ◽  
Serum Samples ◽  
Caninum Infection ◽  
Positive Rate ◽  
Associated Risk Factors

This study aimed to determine the frequency of antibodies to Neospora caninum in domestic sheep raised in Henan province, central China. Serum samples from 779 domestic sheep were collected from March 2015 to May 2016, and antibodies to N. caninum were evaluated using an enzyme-linked immunosorbent assay (ELISA). The results showed an overall IgG positive rate of 7.32% (57/779). The risk factors significantly related to seropositivity to N. caninum in sheep were the age, the presence of dogs, and the rearing system. This is the first report of N. caninum infection and associated risk factors in domestic sheep in central China.

scholarly journals Toxocara infection: seroprevalence and associated risk factors among primary school children in central China

Parasite ◽  
2020 ◽  
Vol 27 ◽  
pp. 30 ◽  
Author(s):  
Shuai Wang ◽  
Haoran Li ◽  
Zhijun Yao ◽  
Pengju Li ◽  
Dong Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Primary School ◽  
School Children ◽  
Protective Factor ◽  
Henan Province ◽  
Hand Washing ◽  
Central China ◽  
Primary School Children ◽  
Enzyme Linked Immunosorbent Assay ◽  
Associated Risk Factors

Toxocariasis is a zoonotic disease that poses a threat to public health worldwide. In the present study, we investigated the seroprevalence of Toxocara infection among primary school children in Henan province, central China, which was previously unknown. Sera from 2451 primary school children were collected from September 2015 to October 2018, and evaluated for anti-Toxocara antibodies by enzyme-linked immunosorbent assay (ELISA). The overall seroprevalence of Toxocara infection was 5.14% (126/2451). The main risk factors related to Toxocara infection identified in this study were the age of children, residence area of children, contact with cats or dogs, and exposure to soil. Hand washing before eating was considered to be a protective factor. These findings demonstrate that Toxocara infection is relatively common among primary school children in Henan province.

scholarly journals Seroprevalence estimate and associated risk factors for neosporosis in dairy cattle in the northwest region of Rio Grande do Sul State, Brazil

2018 ◽  
Vol 48 (7) ◽  
Author(s):  
Patrícia Carvalho Gindri ◽  
Bruna Mion ◽  
Jorgea Pradieé ◽  
Tatiane Senna Bialves ◽  
Guilherme Nunes de Souza ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bos Taurus ◽  
Neospora Caninum ◽  
Rio Grande ◽  
Enzyme Linked Immunosorbent Assay ◽  
Rio Grande Do Sul ◽  
Serum Samples ◽  
Northwestern Region ◽  
Associated Risk Factors ◽  
Northwest Region

ABSTRACT: The aim of this study was to estimate neosporosis seroprevalence and its associated risk factors in milk herds (Bos taurus taurus) located in the northwestern region of Rio Grande do Sul State, Brazil. Three hundred twenty-two blood samples were collected from dairy cows on 18 farms in 17 cities of this region. An epidemiologic questionnaire was completed for each farm. It consisted of questions about the general characteristics of the herd, reproduction, and animal management. Serum samples were tested for Neospora caninum using a commercial enzyme-linked immunosorbent assay (ELISA) kit. Results indicated a seroprevalence of Neospora in 88.9% (16/18) of herds and 31.1% (100/322) of individuals. Risk factor analyses demonstrated that culling by reproductive disorder (OR = 0.6), flooding (OR = 0.5), and commercial sale (OR = 0.4) were associated with seroprevalence. Nevertheless, the purchase of replacement animals in the herd played an important role in disease occurrence (OR = 2.2). Results of this study suggested that Neospora caninum was present in the studied herds under investigation and that there are risk factors associated with its seroprevalence on the farms of the northwestern of Rio Grande do Sul.

scholarly journals Seroprevalence and risk factors of Toxoplasma gondii infection in primary school children in Henan province, central China

Parasite ◽  
2020 ◽  
Vol 27 ◽  
pp. 23 ◽  
Author(s):  
Shuai Wang ◽  
Zhijun Yao ◽  
Haoran Li ◽  
Pengju Li ◽  
Dong Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Toxoplasma Gondii ◽  
Primary School ◽  
School Children ◽  
Protective Factor ◽  
Henan Province ◽  
Central China ◽  
Primary School Children ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Samples

Toxoplasma gondii is an obligate intracellular protozoan parasite with global distribution. However, data on T. gondii infection among children in primary school in Henan province, central China were lacking. In this study, 2451 serum samples of primary school children in this province were collected from September 2015 to October 2018 and evaluated for T. gondii antibodies using an enzyme-linked immunosorbent assay (ELISA). The overall seroprevalence was 9.51% (233/2451), of which 7.59% (186/2451) showed IgG positivity, 0.73% (18/2451) IgM and 1.18% (29/2451) both. The main risk factors related to T. gondii infections were the age of children, residence area, contact with cats, and exposure to soil. Moreover, hand washing before eating was considered a protective factor. Seroprevalence of T. gondii infection among the study population was common, emphasizing the need to prevent and control this infection. This is the first report of T. gondii seroprevalence in primary school children in Henan province, central China.

scholarly journals Seroprevalence of Toxoplasma gondii and associated risk factors in domestic pigs raised from Cuba

2021 ◽  
Author(s):  
Julio César Castillo-Cuenca ◽  
Álvaro Martínez-Moreno ◽  
José Manuel Diaz-Cao ◽  
Angel Entrena-García ◽  
Jorge Fraga ◽  
...  
Keyword(s):  
Risk Factors ◽  
Toxoplasma Gondii ◽  
Meat Products ◽  
Control Measures ◽  
Health Concern ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Samples ◽  
Cross Sectional ◽  
Weaning Pigs ◽  
Associated Risk Factors

AbstractA cross-sectional study was carried out to determine the seroprevalence of Toxoplasma gondii and associated risk factors in pigs in the largest pork-producing region in Cuba. Serum samples from 420 pigs, including 210 sows and 210 post-weaning pigs, were tested for antibodies against T. gondii using a commercial indirect enzyme-linked immunosorbent assay. Anti-T. gondii antibodies were detected in 56 animals (13.3%, 95% CI: 10.1–16.6). A generalized estimating equations model revealed that the risk factors associated with higher seropositivity in pigs were altitude (higher in farm’s location < 250 m above sea level (masl) versus ≥ 250 masl) and age (higher in sows compared to post-weaning pigs). The results indicated that this protozoan parasite is widely distributed on pig farms in the study area, which is a public health concern since the consumption of raw or undercooked pork meat products containing tissue cysts is considered one of the main routes of T. gondii transmission worldwide. Control measures should be implemented to reduce the risk of exposure to T. gondii in pigs in Cuba.

scholarly journals Seroprevalence of Toxoplasma gondii and Encephalitozoon cuniculi among domestic rabbits in central China

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 9 ◽  
Author(s):  
Shuai Wang ◽  
Zhijun Yao ◽  
Lingjuan Li ◽  
Yaoqian Pan ◽  
Pengju Li ◽  
...  
Keyword(s):  
Risk Factors ◽  
Toxoplasma Gondii ◽  
Central China ◽  
Enzyme Linked Immunosorbent Assay ◽  
Meat Production ◽  
Health Issues ◽  
Encephalitozoon Cuniculi ◽  
Serum Samples ◽  
Modified Agglutination Test ◽  
Domestic Rabbits

Rabbits (Oryctolagus cuniculus) are frequently reared for meat production in China. The aim of this study was to assess the seroprevalence of Toxoplasma gondii and Encephalitozoon cuniculi, and risk factors of infection in domestic rabbits raised in Henan province, central China. 1,213 serum samples of domestic rabbits were collected and tested for anti-T. gondii and anti-E. cuniculi antibodies using a modified agglutination test (MAT) and an enzyme-linked immunosorbent assay (ELISA), respectively. The serum positive rates of T. gondii and E. cuniculi were 128/1,213 (10.55%) and 235/1,213 (19.37%), respectively. Co-infection of T. gondii and E. cuniculi was demonstrated in 84 specimens; 44 rabbits were seropositive for T. gondii alone, while 151 rabbits were seropositive for E. cuniculi alone. The main risk factors simultaneously associated with T. gondii and E. cuniculi infection were the age of the rabbit, the type of food, and the rabbit rearing system. Serum positive rates of T. gondii and E. cuniculi among domestic rabbits were high, indicating the possibility of public health issues.

Seroprevalence of contagious bovine pleuropneumonia in cattle of Punjab, Pakistan and assessment of risk factors

2019 ◽  
Author(s):  
Ahsan Anjum ◽  
Asim Aslam ◽  
Raheela Akhtar ◽  
Tahir Yaqub ◽  
Junaid Naseer ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cross Sectional Study ◽  
Control Measures ◽  
Export Market ◽  
Economic Losses ◽  
Enzyme Linked Immunosorbent Assay ◽  
Contagious Bovine Pleuropneumonia ◽  
Serum Samples ◽  
Cross Sectional ◽  
Associated Risk Factors

Contagious bovine pleuropneumonia (CBPP) is an important infectious disease of respiratory system of cattle, caused by Mycoplasma mycoides subspecies mycoides. A cross sectional study was conducted in Lahore, Kasur and Jhang districts of Punjab to determine the prevalence of CBPP. A total of 560 serum samples were examined for the specific antibodies against M. mycoides subspecies mycoides, using a sandwich enzyme-linked immunosorbent assay. Associated risk factors that were evaluated include age, gender and breed. In this study, the overall seroprevalence was 8.75%. The seroprevalence of CBPP in Lahore, Kasur and Jhang were 8.26, 8.20 and 10.06%, respectively, but no significance difference (P less than 0.05) was observed. Among the assessed potential predisposing factors, gender and breed were not significantly associated with the serological status of the animal (P greater than 0.05), in which the age affected significantly the positivity to CBPP (P less than 0.05). The highest seropositivity was observed in animals of more than 7 years of age (32.08%) followed by in 4-7 years of age (8.16%) and lowest in animals of less than 4 years old (0.79%). This study confirms the presence of CBPP in the state which could be a threat to livestock export market and warrants the implementation of control measures to mitigate the economic losses associated with the disease. 

scholarly journals Evidence of Neospora caninum exposure among native Korean goats (Capra hircus coreanae)

2014 ◽  
Vol 59 (No. 12) ◽  
pp. 637-640 ◽  
Author(s):  
BY Jung ◽  
SH Lee ◽  
D. Kwak
Keyword(s):  
Neospora Caninum ◽  
Control Strategies ◽  
Integrated Control ◽  
Protozoan Parasite ◽  
Capra Hircus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Samples ◽  
Caninum Infection ◽  
One Year ◽  
And Control

Neospora caninum is a protozoan parasite that causes abortion in ruminants, including goats. The objective of the present study was to determine the seroprevalence of N. caninum in native Korean goats (Capra hircus coreanae). A commercial enzyme-linked immunosorbent assay kit was used to analyse 464 serum samples for the presence of N. caninum antibodies. Four samples (0.9%, 95% confidence intervals &ndash; CI: 0.0&ndash;1.7) were found to be positive for N. caninum antibodies. The seroprevalence was analysed according to age (less than to one year, young; more than or equal one year, adult; and unknown), sampling season (April to September, warm; October to March, cold), and region (northern, central, and southern). However, there were no statistically significant differences in seroprevalence according to age, season, and region (P &gt; 0.05). This is the first report on the seroprevalence of N. caninum in native Korean goats. The results of this study indicate a nationwide distribution of N. caninum among goats, with a relatively low prevalence. Therefore, the implementation of integrated control strategies as well as measures for prevention and control of N. caninum infection among goats is recommended.

scholarly journals Risk factor analysis associated with Neospora caninum in dairy cattle in Western Brazilian Amazon

2021 ◽  
Vol 30 (1) ◽  
Author(s):  
Poliana de Jesus Souza Venturoso ◽  
Osvaldo Juliatti Venturoso ◽  
Gisele Glomba Silva ◽  
Maerle Oliveira Maia ◽  
Rute Witter ◽  
...  
Keyword(s):  
Risk Factors ◽  
Dairy Cattle ◽  
Neospora Caninum ◽  
Fluorescent Antibody ◽  
Antibody Test ◽  
Serum Samples ◽  
Present Survey ◽  
Caninum Infection ◽  
Factors Associated ◽  
And Control

Abstract Neospora caninum is considered to be one of the main causes of abortion among cattle. The present survey was conducted in the municipality of Rolim de Moura, Rondônia State, Brazil. A questionnaire that investigates the epidemiological aspects of neosporosis was used in the analysis of risk factors associated with the animal-level and herd-level prevalence in dairy cattle. A total of 416 bovine blood samples were collected from 30 farms, and N. caninum antibody levels were measured by Indirect Fluorescent Antibody Test (IFAT). Analysis of dairy cattle serum samples revealed the presence of anti-N. caninum antibodies to be 47.36% (n = 197). Risk factors associated with N. caninum infection were the management system and access locations of dogs. The results of the present survey indicated that infection of dairy cattle with N. caninum is widespread in the studied region of Western Amazon, which has implications for prevention and control of neosporosis in this region. Therefore, integrated control strategies and measures are recommended to prevent and control N. caninum infection in dairy cattle. In addition, direct contact between dairy cattle, dogs and wild animals, which can influence the epidemiology of neosporosis, should be investigated further.

Global Seroprevalence and Associated Risk Factors with Neospora Caninum Infection in Sheep: A Systematic Review and Meta-Analysis

2021 ◽  
Author(s):  
Valeria Analía Sander ◽  
Luisa F. Mendoza Morales ◽  
Valentina Lagorio ◽  
Mariana G. Corigliano ◽  
Edwin Sanchez-Lopez ◽  
...  
Keyword(s):  
Risk Factors ◽  
Systematic Review ◽  
Neospora Caninum ◽  
Meta Analysis ◽  
Caninum Infection ◽  
Associated Risk Factors

scholarly journals Seroprevalence and Associated Risk Factors of Brucellosis in Livestock and Residents of New Valley Governorate, Egypt

2020 ◽  
pp. 531-539
Author(s):  
Mohamed Said Diab ◽  
Sherif Abd Allah Zidan ◽  
Nermin Abdalla A. Hassan ◽  
Haitham Elaadli ◽  
Ahmed Mohamed Bayoumi
Keyword(s):  
Risk Factors ◽  
Raw Milk ◽  
Cross Sectional Study ◽  
Enzyme Linked Immunosorbent Assay ◽  
Human Brucellosis ◽  
Human Occupation ◽  
Serum Samples ◽  
Cross Sectional ◽  
Significant Difference ◽  
Associated Risk Factors

Brucellosis is a worldwide zoonotic disease which is now considered endemic in most parts of Egypt. A cross-sectional study was carried out from December 2018 to February 2020 to investigate the seroprevalence of brucellosis in humans and livestock residing in two regions located in New Valley Governorate, Egypt. A total of 1254 animals (673 cattle, 348 sheep, and 233 goats) and 523 human serum samples were examined for brucellosis using Rose Bengal test (RBT) and then randomly selected sera (15 from cattle, 7 from sheep, 3 from goats, and 45 from humans) were further analyzed by complement fixation test, enzyme-linked immunosorbent assay to compare and detect the sensitivity and specificity of RBT. The prevalence of brucellosis was 0% in cattle, sheep, and goats while it was 23.9% in humans using RBT. Concerning humans, there was a higher percentage of infection in EL Kharga (33.6%). The prevalence of this infection was also at a higher level among individuals aged above 40 years (28.57%). Furthermore, men (26.11%) were more inclined to be inflicted, compared to women (22.5%) with no significant difference. Considering the human occupation, abattoir workers were the most predominant group of people at risk (33.3%), followed by farmers (31.25%) and animal keepers (20.6%) while the lowest prevalence was demonstrated in the housewives where the prevalence was 18.8 %. As a result, risk factors of the age range, locality, time of infection, contact with animals, and occupational groups could significantly affect the prevalence of human brucellosis in the New Valley Governorate. In conclusion, brucellosis is an alarming problem among residents of the New Valley Governorate. Thus, reducing the prevalence in humans and animals in the region of study may include restriction of the marketing the raw milk and enhancing public health awareness.

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