scholarly journals Cryptosporidium spp. Infections in Livestock and Wild Animals in Azerbaijan Territory

2020 ◽  
Vol 2 (1) ◽  
pp. 44
Author(s):  
Simuzer Mamedova ◽  
Panagiotis Karanis
Keyword(s):  
Staining Method ◽  
Current Knowledge ◽  
Protozoan Parasite ◽  
Structural Features ◽  
Cryptosporidium Spp ◽  
Faecal Samples ◽  
Cryptosporidium Oocysts ◽  
Stool Specimens ◽  
Intracellular Protozoan Parasite ◽  
Acid Fast Staining

Cryptosporidium is an intracellular protozoan parasite and is increasingly gaining attention as a human and an animal pathogen, mainly due to its predominant involvement in worldwide waterborne outbreaks. This paper reviews the current knowledge and understanding of Cryptosporidium spp. in terrestrial and aquatic animals in Azerbaijan. The diagnosis of cryptosporidiosis relies on the identification of oocysts in faecal samples released by the infected host. Stool specimens were processed using the modified acid-fast staining method (Ziehl-Neelsen) and microscopically examined for Cryptosporidium oocysts. Thirteen species of Cryptosporidium (C. fragile, C. ducismarci, C. serpentis, C. varani, C. baileyi, C. meleagridis, C. muris, C. parvum, C. ubiquitum, C. andersoni, C. bovis, C. hominis, C. suis) from amphibians, reptiles, birds and mammals have been identified as a result of studies conducted between 1987 and 2019 on the structural features of Cryptosporidium oocysts in Azerbaijan territory.

scholarly journals Cryptosporidium spp. infections in livestock and wild animals in Azerbaijan territory

2021 ◽  
Author(s):  
S. Mamedova ◽  
P. Karanis
Keyword(s):  
Current Knowledge ◽  
Protozoan Parasite ◽  
Wild Animals ◽  
Vertebrate Species ◽  
Cryptosporidium Spp ◽  
Globally Distributed ◽  
Intracellular Protozoan Parasite

Abstract Cryptosporidium is an intracellular protozoan parasite, globally distributed and capable of infecting various vertebrate species, including humans as well as domestic and wild animals. Cryptosporidium is increasingly gaining attention as a human and an animal pathogen mainly due to its dominant involvement in worldwide waterborne outbreaks. The present paper reviews the current knowledge and understanding of Cryptosporidium spp. in terrestrial and water animals in Azerbaijan.

scholarly journals Prevalence and determinants of Cryptosporidium spp. infection in smallholder dairy cattle in Iringa and Tanga Regions of Tanzania

2007 ◽  
Vol 74 (1) ◽  
Author(s):  
E.S. Swai ◽  
N.P. French ◽  
E.D. Karimuribo ◽  
J.L. Fitzpatrick ◽  
M.J. Bryant ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Animal Health ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Cryptosporidium Spp ◽  
Faecal Samples ◽  
The Family ◽  
Cryptosporidium Oocysts ◽  
Smallholder Dairy ◽  
Family House

The prevalence of Cryptosporidium spp. infection in a cross-sectional study of dairy cattle, from two contrasting dairying regions in Tanzania, were determined by staining smears of faecal samples with the modified Ziehl-Neelsen technique. Of the 1 126 faecal samples screened, 19.7% were positive for Cryptosporidium spp. The prevalence was lower in Tanga Region than in Iringa Region. The prevalence of affected farms was 20% in Tanga and 21% in Iringa. In both regions, the probability of detecting Cryptosporidium oocysts in faeces varied with animal class, but these were not consistent in both regions. In Tanga Region, Cryptosporidium oocysts were significantly more likely to be found in the faeces of milking cows. In Iringa Region, the likelihood that cattle had Cryptosporidium-positive faeces declined with age, and milking cattle were significantly less likely to have Cryptosporidium positive faeces. In this region, 7% of cattle were housed within the family house at night, and this was marginally associated with a higher likelihood that animals had Cryptosporidium-positive faeces. Our study suggests that even though herd sizes are small, Cryptosporidium spp. are endemic on many Tanzanian smallholder dairy farms. These protozoa may impact on animal health and production, but also on human health, given the close associations between the cattle and their keepers. Further studies are required to assess these risks in more detail, and understand the epidemiology of Cryptosporidium spp. in this management system.

scholarly journals Water used to moisten vegetables is a source of Escherichia coli and protozoan parasite contamination at markets in Hanoi, Vietnam

2014 ◽  
Vol 12 (4) ◽  
pp. 896-900 ◽  
Author(s):  
Nguyen Thuy Tram ◽  
Anders Dalsgaard
Keyword(s):  
Escherichia Coli ◽  
Food Safety ◽  
Water Samples ◽  
Protozoan Parasite ◽  
Protozoan Parasites ◽  
Safety Hazards ◽  
E Coli ◽  
Cryptosporidium Spp ◽  
Median Concentration ◽  
Cryptosporidium Oocysts

The study was done to assess the level of fecal (Escherichia coli) and protozoan parasite (Cryptosporidium spp. and Giardia spp.) contamination in water used by traders to moisten vegetables at markets in Hanoi, Vietnam. A total of 200 splashing water samples from markets located within eight districts were analyzed for E. coli and Cryptosporidium spp. and Giardia spp. (oo)cysts. Giardia cysts were found in 17 splashing water samples and Cryptosporidium oocysts in nine samples, with median values of 20 cysts ml−1 and 10 oocysts ml−1, respectively. E. coli was found with a median concentration of 636 cfu ml−1 and its occurrence was negatively correlated with the numbers of protozoan parasites. The splashing water was kept in buckets that were rarely cleaned and often used for handwashing. The finding of these pathogens in splashing water is likely to represent real food safety hazards.

scholarly journals Comparative Evaluation of Four Potent Neospora caninum Diagnostic Antigens Using Immunochromatographic Assay for Detection of Specific Antibody in Cattle

2021 ◽  
Vol 9 (10) ◽  
pp. 2133
Author(s):  
Ragab Fereig ◽  
Hanan Abdelbaky ◽  
Yoshifumi Nishikawa
Keyword(s):  
Current Knowledge ◽  
Neospora Caninum ◽  
Control Strategies ◽  
Acute Infection ◽  
High Sensitivity ◽  
Protozoan Parasite ◽  
Dense Granule ◽  
Caninum Infection ◽  
Kappa Value ◽  
Intracellular Protozoan Parasite

Neospora caninum is an intracellular protozoan parasite responsible for numerous abortion outbreaks and neonatal abnormalities in cattle. Rapid and accurate diagnosis is critical for N. caninum control owing to the lack of vaccine or drug-based control strategies. Herein, we evaluated the performance of four frequently used antigens in the diagnosis of N. caninum infection using immunochromatographic tests (ICTs) as a rapid, affordable, and field applicable tool. These antigens included recombinant proteins of N. caninum surface antigen 1 (NcSAG1), dense granule proteins 7 (NcGRA7) and 6 (NcGRA6), in addition to native Neospora lysate antigen (NLA). Our study revealed the utility of all antigen-based ICTs for detection of specific antibodies to N. caninum. However, the NcSAG1-based ICT was the best for detection of all control N. caninum-infected mouse or cattle sera, while NcGRA7 and NcGRA6-based ICTs exhibited specific ability to detect samples from acute and sub-acute infection in mice and cattle, respectively. Analyses of the NcSAG1-based ICT against enzyme-linked immunosorbent assays (ELISAs) of the same antigen revealed its efficiency in detection of field cattle samples as observed in high sensitivity (84.2%), specificity (93.5%), agreement (90%), and kappa value (0.78). The current knowledge provides an efficient platform for N. caninum control through on-site diagnosis of infected cattle.

scholarly journals Prevalence and species identification of Cryptosporidium spp. in the newborn dairy calves from Muang District, Khon Kaen Province, Thailand

2019 ◽  
Vol 12 (9) ◽  
pp. 1454-1459 ◽  
Author(s):  
Phennarin Doungmala ◽  
Patchara Phuektes ◽  
Weerapol Taweenan ◽  
Somboon Sangmaneedet ◽  
Ornampai Japa
Keyword(s):  
18S Rrna ◽  
Polymerase Chain Reaction Amplification ◽  
18S Rrna Gene ◽  
Dairy Calves ◽  
Rrna Gene ◽  
Nested Polymerase Chain Reaction ◽  
Cryptosporidium Spp ◽  
Cryptosporidium Oocysts ◽  
Khon Kaen ◽  
Acid Fast Staining

Aim: This study aims to determine the prevalence of Cryptosporidium spp. infection and to identify the species of Cryptosporidium spp. in newborn dairy calves between December 2016 and March 2017 in Muang District, Khon Kaen Province, Thailand. Materials and Methods: A total of 200 fecal samples from newborn dairy calves of the ages 1 day up to 28 days were collected and the presence of Cryptosporidium oocysts was examined microscopically using the modified Kinyoun's acid-fast staining technique. Then, Cryptosporidium species were identified using nested polymerase chain reaction amplification of 18S rRNA gene and sequencing. Results: The modified Kinyoun's acid-fast staining revealed the presence of Cryptosporidium oocysts in 51% (102/200). Sequence analysis of the 18S rRNA gene identified two species, namely, Cryptosporidium bovis (n=11) and Cryptosporidium ryanae (n=11) and one isolated strain could not be identified. Conclusion: This study indicated that newborn dairy calves aging up to 4 weeks were highly infected with Cryptosporidium spp., and the infection mostly occurred in diarrheic dairy calves. This is the first report of Cryptosporidium in dairy calves in Khon Kaen Province and the results provide baseline information for further studies and control of Cryptosporidium infection in dairy calves in the study area.

scholarly journals Detection of Cryptosporidiosis in Dogs of Veterinary Clinics in Surabaya City Using Acid-Fast Staining and PCR

2021 ◽  
Vol 11 (4) ◽  
pp. 602-607
Author(s):  
Romy Muhammad Dary Mufa ◽  
Nunuk Dyah Retno Lastuti ◽  
Djoko Legowo ◽  
Mufasirin .
Keyword(s):  
Polymerase Chain Reaction ◽  
Cryptosporidium Parvum ◽  
Staining Method ◽  
Chain Reaction ◽  
Fecal Examination ◽  
Cryptosporidium Spp ◽  
Two Samples ◽  
Polymerase Chain ◽  
Positive Results ◽  
Acid Fast Staining

The need for maintaining pets, such as dogs, is increasing along with the human population. When individuals keep dogs as their pets, they must be aware of disease transmission from dogs. One of the disease agents transmitted from pets to their owners is Cryptosporidium spp. causing cryptosporidiosis. The aim of the present study was to detect Cryptosporidium spp. infection in dogs through a fecal examination using the acid-fast staining method (Ziehl Neelsen) confirmed with the molecular examination of Polymerase Chain Reaction (PCR). Detection of Cryptosporidium sp. in feces of dogs was set up by using an acid-fast staining method. Positive results of the acid-fast staining were further confirmed using PCR. Polymerase Chain Reaction used primary AB210854 specific to the Cryptosporidium canis and S139-S141 genes which were specific primary for the Cryptosporidium parvum gene. Results of the acid-fast staining showed that 80% of the samples (40 samples from total samples) were infected with Cryptosporidium spp. Further detection using PCR showed that four samples were positive for Cryptosporidium canis infection, and two samples showed positive results of Cryptosporidium parvum infection. Dog samples were mostly infected with Cryptosporidium spp. including Cryptosporidium canis and Cryptosporidium parvum through a fecal examination using acid-fast staining and PCR. Keywords: Acid-fast staining, Cryptosporidium spp., Dogs, PCR

scholarly journals IDENTIFIKASI KRIPTOSPORIDIOSIS DI PASIEN ANAK HIV DENGAN DIARE KRONIS DI RUANG GASTRO ANAK

2016 ◽  
Vol 18 (1) ◽  
pp. 8
Author(s):  
Jusak Nugraha ◽  
Febtarini Rahmawati ◽  
Dominicus Husada
Keyword(s):  
Opportunistic Infections ◽  
Severe Malnutrition ◽  
Chronic Diarrhoea ◽  
Persistent Diarrhoea ◽  
Paediatric Hiv ◽  
Cryptosporidium Spp ◽  
Binocular Microscope ◽  
Stool Specimens ◽  
Stool Suspension ◽  
Acid Fast Staining

Based on the results of overseas researchers, Cryptosporidiosis occurs in immunosuppressive cases with chronic diarrhoea. In this study the researchers would like to know exactly whether that Cryptosporidiosis occurs also in paediatric HIV patients. The latest data show that the incidence of opportunistic infection is characterized by persistent diarrhoea and severe malnutrition as a complication of the paediatric HIV-infected patients is increasing. The objects of the research were fifteen paediatric HIV-infected patients which treated at the Paediatric Gastro Ward of Dr. Soetomo Hospital Surabaya due to persistent diarrhoea. Paediatric patients were less than five years old, suffered persistent diarrhoea more than two weeks with severe malnutrition. Stool specimens were transported using 10% formalin. The stool suspension was filtered, and distilled water was added followed by centrifugation (sedimentation method). The precipitate material was placed on a glass object and dried, and then fixed by methanol and stained with Acid Fast Staining and trichrome staining. The protozoa Cryptosporidium spp. was observed under a binocular microscope with 100× magnification (immersion oil) objective. The result was confirmed as positive if a red spherical or oval formation of oocyste of 4–6 micron appeared. Sixty percent of the 15 paediatric HIV-infected patients with chronic diarrhoea showed positive cryptosporidiosis. Cryptosporidiosis is one of the opportunistic infections resulting in chronic diarrhoea in paediatric HIV-infected patients. The results of the present research indicate that the enteric parasite Cryptosporidium spp. was the main cause of persistent diarrhoea in paediatric HIV-infected patients

scholarly journals Detection of Cryptosporidium oocysts in calves and children in Mosul, Iraq

2012 ◽  
Vol 36 (0E) ◽  
pp. 280-285
Author(s):  
Tawfiq I. Al-alousi
Keyword(s):  
Rural Areas ◽  
Cryptosporidium Spp ◽  
Comparison Of Results ◽  
Faecal Samples ◽  
Significant Difference ◽  
Cryptosporidium Oocysts ◽  
Auramine O ◽  
Stool Samples ◽  
One Year

This study was carried out during May-October 2010 to determine the prevalence of Cryptosporidium spp. in calves and children in rural areas around Mosul, north of Iraq. A total of 78 faecal samples were taken from calves which were no more than one year old. Information about age, consistency of faeces (as diarrheic or normal) and contact with human were recorded. At the same time, 95 stool samples were taken from children aged one month to 12 years old suffering from diarrhea and living in the same farms where the samples of calves have been collected. All samples were stained with modified Ziehl-Neelsen acid-fast stain and Auramine O techniques to detect the presence of Cryptosporidium oocysts. Results revealed that the prevalence of Cryptosporidium in calves and children were 43.56% and 18.9%, respectively. Comparison of results obtained with the two stain techniques showed no significant difference and being sensitive.

scholarly journals Opportunistic Protozoan Infections of Carnivores

2017 ◽  
Vol 61 (4) ◽  
pp. 40-43
Author(s):  
K. Mravcová ◽  
M. Ferko ◽  
G. Štrkolcová ◽  
M. Goldová
Keyword(s):  
Staining Method ◽  
Sandwich Elisa ◽  
Giardia Duodenalis ◽  
Chronic Diarrhoea ◽  
Course Of Disease ◽  
Cryptosporidium Spp ◽  
Total Prevalence ◽  
Cryptosporidium Oocysts ◽  
Protozoan Infections ◽  
Flotation Method

AbstractGiardiasis and cryptosporidiosis are protozoan infections of the digestive tract and one of the most frequent causes of enteritis in dogs and cats, associated with acute and chronic diarrhoea. Generally, the risk of infection is higher for younger individuals in which the overall clinical picture and the course of disease are more serious. In this study we investigated the prevalence of giardiasis and cryptosporidiosis in dogs in Košice district of eastern Slovakia. From September 2015 until November 2016, we examined samples of faeces from 100 dogs from two shelters. Giardia duodenalis was diagnosed by the flotation method according to Faust, and by the molecular biologic method (Nested PCR). For the diagnosis of cryptosporidium oocysts, we used a staining method according to Kinyoun, and for detection of the presence of Cryptosporidium spp. a sandwich ELISA method. The total prevalence of these protozoan infections were 22 % (22/100), and of that, 19 % of the samples (19/100) were positive for Giardia duodenalis and 3 % (3/100) for the Cryptosporidium spp. In the shelter in Haniska, the giardia cysts were present in 9/54 samples (16.6 %) and cryptosporidia oocysts in 1/54 (1.85 %) samples of the faeces. In the Malá Farma shelter, 10/46 (21.73 %) samples were positive for G. duodenalis and 2/46 (4.34 %) showed positivity for Cryptosporidium spp.

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