Genera Of Helminths Research Articles

Intestinal parasites in goats (Capra hircus Linnaeus, 1758) in Bhaktapur, Nepal.

The present study was conducted to determine the prevalence of gastrointestinal (GI) parasites in goats of Suryabinayak Municipality, Bhaktapur, Nepal. A total of 300 faecal samples of goats were collected from the study area from July to August 2021 and subjected to direct smear, sedimentation, and flotation techniques for coprological examination. The study revealed that 86% of samples were positive for GI parasites with 15 genera, including six genera of protozoan, and nine genera of helminths. Age-dependent prevalence of helminth parasites was higher in adult goats (75%) than that young ones. Single infection was recorded 31.01%, double was 35.27%, and multiple was 33.72%. Training on goat rearing, proper management of goat farms, awareness on GI diseases, and their control can help the owners increase productivity.

Metabarcoding of protozoa and helminth in black-necked cranes: a high prevalence of parasites and free-living amoebae.

Parasites and free-living amoebae (FLA) are common pathogens that pose threats to wildlife and humans. The black-necked crane (Grus nigricollis) is a near-threatened species and there is a shortage of research on its parasite diversity. Our study aimed to use noninvasive methods to detect intestinal parasites and pathogenic FLA in G. nigricollis using high-throughput sequencing (HTS) based on the 18S rDNA V9 region. A total of 38 fresh fecal samples were collected in Dashanbao, China, during the overwintering period (early-, middle I-, middle II-, and late-winter). Based on the 18S data, eight genera of parasites were identified, including three protozoan parasites: Eimeria sp. (92.1%) was the dominant parasite, followed by Tetratrichomonas sp. (36.8%) and Theileria sp. (2.6%). Five genera of helminths were found: Echinostoma sp. (100%), Posthodiplostomum sp. (50.0%), Euryhelmis sp. (26.3%), Eucoleus sp. (50.0%), and Halomonhystera sp. (2.6%). Additionally, eight genera of FLA were detected, including the known pathogens Acanthamoeba spp. (n=13) and Allovahlkampfia spp. (n=3). Specific PCRs were used to further identify the species of some parasites and FLA. Furthermore, the 18S data indicated significant changes in the relative abundance and genus diversity of the protozoan parasites and FLA among the four periods. These results underscore the importance of long-term monitoring of pathogens in black-necked cranes to protect this near-endangered species.

Drivers behind co-occurrence patterns between pathogenic bacteria, protozoa, and helminths in populations of the multimammate mouse, Mastomys natalensis

Advances in experimental and theoretical work increasingly suggest that parasite interactions within a single host can affect the spread and severity of wildlife diseases. Yet empirical data to support predicted co-infection patterns are limited due to the practical challenges of gathering convincing data from animal populations and the stochastic nature of parasite transmission. Here, we investigated co-infection patterns between micro- (bacteria and protozoa) and macroparasites (gastro-intestinal helminths) in natural populations of the multimammate mouse (Mastomys natalensis). Fieldwork was performed in Morogoro (Tanzania), where we trapped 211 M. natalensis and tested their behaviour using a modified open-field arena. All animals were checked for the presence of helminths in their gastro-intestinal tract, three bacteria (Anaplasma, Bartonella, and Borrelia) and two protozoan genera (Babesia and Hepatozoon). Besides the presence of eight different helminth genera (reported earlier), we found that 19% of M. natalensis were positive for Anaplasma, 10% for Bartonella, and 2% for Hepatozoon species. Hierarchical modelling of species communities was used to investigate the effect of the different host-related factors on these parasites’ infection probability and community structure. Our results show that the infection probability of Bartonella increased with the host's age, while the infection probability of Anaplasma peaked when individuals reached adulthood. We also observed that less explorative and stress-sensitive individuals had a higher infection probability with Bartonella. Finally, we found limited support for within-host interactions between micro-and macroparasites, as most co-infection patterns could be attributed to host exposure time.

Gastrointestinal parasites of feral pigeon (Columba livia Gmelin, 1789) at two temples of Kathmandu valley

Protozoans, helminths and other gastrointestinal (GI) parasitic infections in Aves are an imperative but often ignored topic in rising nations like Nepal. Accurate inspections of GI parasites in feral pigeons inform pragmatic treatment regimens. In a prospective examination of intestinal parasites in the coprological study of feral pigeons in April 2016, a total of 120 samples were preserved in 2.5% potassium dichromate and examined by microscopy of direct and concentrated faecal sample techniques to detect ova, larvae, and oocysts of parasites. Altogether 109 (90.83%) samples were positive with 6 genera of GI parasites. The study identified one genus of protozoa: Eimeria sp. (43.34%) and five genera of helminths: Capillaria sp. (51.67%), Ascaridia sp. (27.50%), Heterakis sp. (19.17%), Syngamus sp. (4.17%) and Tetrameres sp. (1.70%). The prevalence rate of helminth parasites (83.34%) was higher than the prevalence rate of protozoan parasites (43.34%). The present study revealed a significant difference in the prevalence of helminths and protozoan parasites (χ²=15.14, p<0.05). However, the prevalence of gastrointestinal parasites showed no significant variation with respect to single and mixed infection (χ² =1.56, p>0.05). The present study examined a higher prevalence rate of gastrointestinal parasites due to a lack of deworming programs in feral pigeons and a lack of sustainable action designs. Therefore, the sustainable action design and its implementation to control parasitic infection and reduce the health hazards of feral temple pigeons were recommended.

Environmental soil contamination with zoonotic soil-transmitted helminths in the temple grounds of Chachoengsao Province, Thailand

Background and Aim: Soil-transmitted helminth infections are a serious public health problem. The soil is an important reservoir for several helminth species. This study aimed to estimate the prevalence of soil contamination with zoonotic soil-transmitted helminths. Materials and Methods: Soil samples were collected on the grounds of 19 temples in Ratchasan and Bang Khla districts, Chachoengsao Province, Thailand, between June 2021 and February 2022. A total of 190 soil samples were collected from ten different areas on the grounds of each temple, of which 31 (16.3%) were contaminated. The samples were analyzed by a centrifugal flotation technique using a saturated sodium nitrate solution. Results: Six genera of helminths were recovered from the soil samples, of which five genera were identified as helminth eggs and two genera were identified as helminth larvae. The prevalence of soil contamination with helminth eggs was as follows: Toxocara spp. 15.8% (30/190), hookworm/strongylid 12.1% (23/190), Trichuris spp. 6.8% (13/190), Taenia spp. 2.1% (4/190), Ascaris spp. 1.6% (3/190), and unidentified helminth eggs 5.8% (11/190). Moreover, nematode larvae consisted of 8.4% (16/190) hookworm/strongylid, 3.7% (7/190) of Strongyloides spp., and 4.2% (8/190) unidentified nematode larvae. The rates of soil-transmitted helminth contamination were not significantly different between Ratchasan and Bang Khla districts (p = 0.878). Conclusion: Soil-transmitted helminth contamination was found in the soil environment of the community temples with a high probability of spreading intestinal helminthiasis to the local residents. Therefore, public awareness campaigns should be conducted targeting people in the community to increase their knowledge and understanding about animal healthcare to prevent and control the spread of soil-transmitted helminthiasis. Keywords: soil contamination, soil-transmitted helminth, temple, Thailand, zoonotic helminth.

Prevalence and Clinical Relevance of Schistosoma mansoni Co-Infection with Mycobacterium tuberculosis: A Systematic Literature Review.

Tuberculosis disease stands for the second leading cause of death worldwide after COVID-19, most active tuberculosis cases result from the reactivation of latent TB infection through impairment of immune response. Several factors are known to sustain that process. Schistosoma mansoni, a parasite of the helminth genus that possesses switching power from an immune profile type Th1 to Th2 that favors reactivation of latent TB bacteria. The aim of the study was to assess the prevalence of the co-infection between the two endemic infections. Systematic literature was contacted at the University Clinical Research Center at the University of Sciences, Techniques, and Technologies of Bamako in Mali. Original articles were included, and full texts were reviewed to assess the prevalence and better understand the immunological changes that occur during the co-infection. In total, 3530 original articles were retrieved through database search, 53 were included in the qualitative analysis, and data from 10 were included in the meta-analysis. Prevalence of the co-infection ranged from 4% to 34% in the literature. Most of the articles reported that immunity against infection with helminth parasite and more specifically Schistosoma mansoni infection enhances latent TB reactivation through Th1/Th2. In sum, the impact of Schistosoma mansoni co-infection with Mycobacterium tuberculosis is under-investigated. Understanding the role of this endemic tropical parasite as a contributing factor to TB epidemiology and burden could help integrate its elimination as one of the strategies to achieve the END-TB objectives by the year 2035.

Parasitas gastrintestinais em galinhas de raças ornamentais de um criatório particular na cidade Juiz de Fora, Brasil

To evaluate the occurrence of gastrointestinal parasites in chickens of ornamental breeds from a private farm located in Juiz de Fora, Minas Gerais. Fecal samples were collected from the animals individually, collecting the feces right after defecation. The collections were carried out in September 2018. The samples were packed in sterile plastic containers, identified and sent to the Laboratory of Parasitology and Parasitic Diseases of the Centro Universitário de Valença (UNIFAA), for analysis by the simple centrifuge-float technique. Two genera of helminths, Capillaria spp. and Ascaridia spp., and the protozoan Eimeria spp. It can be concluded that the gastrointestinal parasites found in the ornamental chickens studied did not differ from the endoparasites found in conventional free-range chickens. Coproparasitological exams are an excellent, fast and cheap way to verify/identify parasitic forms, which, once diagnosed, must be fought so that they do not compromise the health of the animals, especially in cases of ornamental birds that, because they are less rustic, may be more sensitive to parasites.

Detection and identification of gastrointestinal parasites in dogs presented to veterinary clinics in Abeokuta, South-western Nigeria

Gastrointestinal parasites of dogs have been incriminated in cases of morbidity and mortality; hence, this study was undertaken to investigate the presence and distribution of gastrointestinal parasites in dogs presented to different veterinary clinics in Abeokuta, Ogun State. One hundred and twenty faecal samples were collected between February to September 2018 from three different veterinary clinics into universal sample bottles that were properly labeled with the age, sex and breed. Samples were processed with Mini-FLOTAC® kit using salt and sugar solution at a specific gravity of 1.3. Data were analyzed with descriptive statistics and Chi square test was used to determine the association between variables. Of the 120 dogs screened, 37(30.8%) were positive for one or more gastrointestinal helminths: males had a prevalence of 24(20%) while females had a prevalence of 13(10.8%). Prevalence of 29(24.1%) and 8(6.7%) was reported in young and adult dogs respectively. Of the different breeds of dogs sampled; the Nigerian local breed had the highest prevalence 21(17.5%) of gastrointestinal helminths, followed by German shepherd 8(6.7%), Rottweiller 5(4.2%), Boerboel 1(0.8%) Samoyed 1(0.8%) and Pitbull 1(0.8%). A statistically significant association (p<0.05) was recorded between gastrointestinal helminth infection and breed while no statistically significant association (p>0.05) was observed between age, sex and gastrointestinal helminth infection. Six different genera of helminths were recorded in this study: Ancylostoma caninum (17.5%), Toxocara canis (14.1%), Toxascaris leonina (2.5%), Dipylidium caninum (2.5%), Trichuris vulpis (1.7%) and Taenia spp (1.7%). The findings from this study indicated moderate prevalence of gastrointestinal helminth infection. The presence of Ancylostoma caninum, Toxocara canis and Dipylidium caninum infection in this study raises concern about the zoonotic potential of these parasites due to the close relationship between man and dogs.

Parasitos gastrointestinais em cães e gatos em linha com a abordagem "Saúde Única”

ABSTRACT Dogs and cats are frequently affected by gastrointestinal parasites of medical and veterinary concern. The correct diagnosis is pivotal to the treatment outcome, reducing the risk of environmental contamination and spreading of these pathogens. The aim of this study was to determine the prevalence of gastrointestinal parasites of domiciled dogs and cats in an urban area of Northeastern Brazil, as well as to discuss the findings from a “One Health” perspective. Fecal samples (n = 231) of dogs (n = 126) and cats (n = 105) were obtained directly from the environment after spontaneous defecation, and subsequently analyzed through the Mini-FLOTAC and Baermann techniques. Of all samples, 28.14% (65/231) presented immature forms of gastrointestinal parasites, with 31.75% (40/126) and 23.81% (25/105) of dogs and cats positive, respectively (x 2 = 1.413; p = 0.2345). Two genera of helminths (Ancylostoma and Toxocara) and two genera of protozoa (Cystoisospora and Entamoeba) were identified. Additionally, co-infections were observed in 15% (6/40) of positive dogs and 28% (7/25) of positive cats (p = 0.2207). None metastrongyloid larvae were detected. In conclusion, animals herein assessed presented a high prevalence of zoonotic gastrointestinal nematodes. Therefore, preventive measures against these neglected parasites should be stimulated.

Zoonoses parasitárias que acometem primatas não humanos do gênero Alouatta nas regiões brasileiras - revisão sistemática no período de 2010-2021

Non-human primates can be reservoirs and carriers of diseases transmitted to humans. The objective of this work was to carry out a systematic bibliographical review on parasitosis with zoonotic potential that affect the genus Alouatta. In the period 2010-2021 the genders were registered: Ascaris, Ancylostoma, Bertiella, Strongyloides, Oesophagostomum, Trichostrongylus and Trichuris, and Bertiella sp. was the zoonotic parasite with the most reports. The southeast region had the greatest diversity of helminths, with six of the seven (6/7) genera of helminths with zoonotic potential, in Alouatta. Knowledge of the epidemiology and biological cycle can contribute to the prevention of parasitic zoonoses transmitted by contact between non-human primates and humans.

Sustainable agriculture: the use of FAMACHA method in Santa Ines sheep in the Semi-arid region of Brazil

Sheep farming is of great importance in generating income to smallholders in semi-arid areas worldwide. Gastrointestinal helminths cause important damage to the animals with poor welfare conditions, impacting in local economies. The objective of this work was to evaluate the FAMACHA method (FMC) in a herd of 60 Santa Inês from Paraíba, Brazil, and to compare the data from previous production years. In order to determine anemic sheep, FMC chart was used in biweekly evaluations for 12 months by trained personnel. Blood and fecal samples were collected monthly to determine packed cell volume (PCV), and parasite fecal egg count (FEC), respectively. The animals were divided into: dry, pregnant and lactating ewes, lambs and rams. Haemonchus was the predominant helminth genus (94.7%) during the whole year. There were up to 97% of success on the interpretation of FMC with 90 to 100% efficacy in the treatment decision. Among the 1356 evaluations, in only 40 (3%) were required deworming, being 27 during the rainy season and 13 during the long dry season. A statistically significant correlation (P < 0.01) was observed between FEC and PCV for the dry, lactating, and pregnant categories. The data reports a 94% reduction in deworming, with a greater need for anthelmintic use in lambs and lactating ewes (P < 0.05). Our data validates the use of FMC in Santa Inês sheep, which is considered a local resilient breed in the semi-arid region of Brazil. We recommend that animals should be examined during the rainy season to prevent most of the clinical problems.

Determinants of prevalence and co-infestation by ecto- and endoparasites in the Atlas day gecko, Quedenfeldtia trachyblepharus, an endemic species of Morocco.

The present work was undertaken to investigate the occurrence of ectoparasites (mites and ticks) and endoparasites (haemogregarines and helminths) in the Atlas day gecko, Quedenfeldtia trachyblepharus (Boettger, 1874), a high-altitude Moroccan endemic lizard. The study examinated also the effect of some host parameters (age, sex, size, body condition), in addition to the season and altitude on the prevalence and intensity of parasite infestations. The study was conducted in three localities from May to September 2019. The results indicated that 35% of juvenile geckos were found to be parasited by one type of parasite. Contrarily, up to three types of parasites were detected in the adults. The prevalence of mite infestations was 48.02%, with a mean intensity of 11.80 ± 15.69. The patterns of mite infestations was found to be mainly related to the altitude, while the prevalence and intensity of infestations were linked to the host size, and to the sex and season, respectively. Larvae and nymphs of Ixodes ricinus (Linnaeus, 1758) were the only life stages infesting geckos, with a prevalence and mean intensity of infestations of 4.41% and 2.2 ± 1.48, respectively. The tick infestations observed were mainly related to the season. The prevalence and intensity of haemogregarine infections were, respectively, 7.92% and 0.24 ± 0.15. The altitude was found to be the only factor associated with this infection. This study also revealed the presence of one helminth genus, Spauligodon sp., with a prevalence and mean intensity of 12.33% and 1.46 ± 0.88, respectively. Spauligodon infestations was significantly associated with age, host size and altitude. This finding represents the first citation of this parasite in Quedenfeldtia genus. Our study indicated that there was no significant relationship between parasite load and geckos body condition, which suggested a stable interaction between the gecko and its parasites. However, it showed a difference of infection between the localities, which could be in relation with habitat conditions.

Resistance of bovine gastrointestinal nematodes to four classes of anthelmintics in the semiarid region of Paraíba state, Brazil.

The effectiveness of four anthelmintic classes on cattle gastrointestinal nematodes in the semi-arid region of Paraiba State, Brazil, was evaluated. Twenty farms were used, testing 40 animals in each one, totaling 800 animals. Cattle were divided into four groups composed with ten animals: I, treated with albendazole sulfoxide 15%; II, treated with ivermectin 1%; III, treated with closantel 25%; IV, treated with levamisole hydrochloride 7.5%. All treatments were administered subcutaneously. For the Fecal Egg Count Reduction Test (FECRT), individual fecal samples were collected on days 0 and 14, and sent for analysis of egg count per gram of feces (EPG) and larval cultures. It was observed that multiresistance was present in 95% (19/20) of the farms. Resistance to ivermectin and albendazole was observed in 95% (19/20), to closantel in 75% (15/20) and to levamisole in 20% (4/20). The most used management system was semi-intensive (75%; 15/20) and the ivermectin was the most reported drug for controlling helminths (65%; 13/20). Haemonchus spp. was the most prevalent helminth genus. It was concluded that the anthelmintic resistance of bovine gastrointestinal nematodes is high in the semi-arid of Paraíba State, Brazil, with multiresistance observed mainly to ivermectin, albendazole and closantel.

Situation of and phenotypic markers of susceptibility to helminth infection among sheep on farms in the Brazilian cerrado biome.

This study aimed to determine the intensity, seasonality, and distribution by genera of, as well as to identify phenotypic markers of susceptibility to, gastrointestinal parasites among sheep on farms within the Brazilian savanna (cerrado) biome. We evaluated 1271 sheep, on seven farms, during the rainy season (in December 2017 and December 2018) and dry season (in July 2018 and July 2019). Parasitological evaluation was based on culture and EPG. We calculated hematocrit, as well as the body condition score and feces score. Of the sheep evaluated, 34.15% had moderate-to-severe parasitic infection. The factors of herds' phenotypic characterization about helminth infections were (p ≤ 0.05 for all): anemia (OR = 5.72); leanness (OR = 1.80); loose stools or diarrhea (OR = 1.54); breed other than Santa Inês (OR = 2.31); "weaned lamb" category (OR = 4.76); "lambing ewe" category (OR = 4.66); and dry season (OR = 2.37). Haemonchus, Trichostrongylus, Oesophagostomum, and Cooperia accounted for 76.40%, 20.23%, 2.89%, and 0.47%, respectively, of the helminth genera identified, with their proportional distributions being comparable between the rainy and dry seasons. Changes in health management, with regard to helminth infection control, are urgently needed in order to combat the disease more effectively and sustainably.

Metagenomics and microscope revealed T. trichiura and other intestinal parasites in a cesspit of an Italian nineteenth century aristocratic palace

This study evidenced the presence of parasites in a cesspit of an aristocratic palace of nineteenth century in Sardinia (Italy) by the use of classical paleoparasitological techniques coupled with next-generation sequencing. Parasite eggs identified by microscopy included helminth genera pathogenic for humans and animals: the whipworm Trichuris sp., the roundworm Ascaris sp., the flatworm Dicrocoelium sp. and the fish tapeworm Diphyllobothrium sp. In addition, 18S rRNA metabarcoding and metagenomic sequencing analysis allowed the first description in Sardinia of aDNA of the human specific T. trichiura species and Ascaris genus. Their presence is important for understanding the health conditions, hygiene habits, agricultural practices and the diet of the local inhabitants in the period under study.

Helminthiasis in dogs of University of Peradeniya premises: a potential public health problem

A sizable population of stray dogs are wandering in the premises of the University of Peradeniya and they ramble and defecate inside the faculty buildings and student hostels. This may pose a public health risk due to wide range of zoonotic parasites strays might harbour. Here we carried out a cross-sectional, coprological survey to assess the canine helminthiasis in the Peradeniya university premises. Fresh feacal samples were collected from March to June 2018 and were analyzed using a modified Sheather’s sucrose flotation technique. Sixty dogs were sampled, of which 76.6% was infected with one or more enteric helminths with a higher prevalence in stray dogs (88.6%) than owned dogs (60.0%). Seven helminth genera were recorded: Toxocara (26.7%), Spirocerca (26.7%), Strongyloides (10.0%), Trichuris (5.0%), Dipylidium (3.3%), Capillaria (3.3%) and Ancylostoma (73.3%). All seven genera were recorded in the stray dogs while Trichuris was not recorded in the owned dogs. Ancylostoma was the most prevalent infection with the highest intensity (103.4 ±198.4 Eggs per gram: EPG). There was no difference in the prevalence of Ancylostoma infections between strays (60.0%) and owned dogs (46.7%) but the intensity of infection was higher in owned dogs (155.2 EPG); range 2 - 755 EPG) than strays (71.6 EPG; range of 1 – 546 EPG), irrespective of de-worming. It could be due to development of antihelminthic resistance as routine use likely to accelerate the development of resistance in canine helminths. Except for Capillaria, other six helminths recorded were zoonotic, with a potential of humans acquiring the infections when there is close contact with dogs. Stray dogs may act as reservoirs of these infections for owned dogs and humans and vise versa. In order to control the zoonotic infections, the stray dog population in and around faculties and residential halls, has to be controlled implementing strict rules on feeding strays inside the university premises.

Detection of Helminth Ova in Wastewater Using Recombinase Polymerase Amplification Coupled to Lateral Flow Strips

Ascaris lumbricoides is a major soil-transmitted helminth that is highly infective to humans. The ova of A. lumbricoides are able to survive wastewater treatment, thus making it an indicator organism for effective water treatment and sanitation. Hence, Ascaris ova must be removed from wastewater matrices for the safe use of recycled water. Current microscopic techniques for identification and enumeration of Ascaris ova are laborious and cumbersome. Polymerase chain reaction (PCR)-based techniques are sensitive and specific, however, major constraints lie in having to transport samples to a centralised laboratory, the requirement for sophisticated instrumentation and skilled personnel. To address this issue, a rapid, highly specific, sensitive, and affordable method for the detection of helminth ova was developed utilising recombinase polymerase amplification (RPA) coupled with lateral flow (LF) strips. In this study, Ascaris suum ova were used to demonstrate the potential use of the RPA-LF assay. The method was faster (< 30 min) with optimal temperature at 37 °C and greater sensitivity than PCR-based approaches with detection as low as 2 femtograms of DNA. Furthermore, ova from two different helminth genera were able to be detected as a multiplex assay using a single lateral flow strip, which could significantly reduce the time and the cost of helminth identification. The RPA-LF system represents an accurate, rapid, and cost-effective technology that could replace the existing detection methods, which are technically challenged and not ideal for on-site detection in wastewater treatment plants.

Parasitologic examination and associated risk factors of domestic dogs at the domestic-wildlife interface in the Iberá wetlands Ecoregion, Argentina.

The wildlife-domestic interface represents points of contact between wild animals and human-associated domestic animals, and provides opportunities for the dissemination and transmission of parasitic agents. Domestic dogs are reservoirs of parasitic agents, many of which are capable of infecting wild animals. To better investigate this potential risk at the Iberá wetlands eco-region, fecal samples from dogs present at the wildlife-domestic interface of two protected areas in Corrientes province, Argentina were examined. The prevalence of intestinal parasites and overall generic richness were examined and associations with age, sex, body condition, anthelmintic treatments and dog movement restriction were explored. From August-September 2017, questionnaires were carried out and fecal samples collected from 51 dogs at the interface zones. The overall estimated prevalence of gastrointestinal parasites was 63%. Nine genera of helminths and four protozoans were found in the examined dogs, many of which are known to infect wild carnivores and several have zoonotic potential. Ancylostoma and Isospora were the most prevalent genera. Freedom to roam was positively associated with prevalence and richness. From all dogs in our study, only a small proportion (17%) is subjected to some degree of movement restriction, while most dogs were free roaming. Veterinary health care and treatment was also extremely limited. The findings of this study revealed conditions of high prevalence of gastrointestinal parasites, lack of veterinary care and unrestricted roaming; all circumstances that suggest that dogs that live at these interface zones pose an infection risk to sympatric wildlife.

Parasitic helminth infections of dogs, wolves, foxes, and golden jackals in Mazandaran Province, North of Iran.

Background and Aim:There is a large amount of information on intestinal parasites in stray dogs and golden jackals (Canis aureus) in Mazandaran Province, Iran. However, there is little information about foxes and wolves, which have a potential role in the spread of dangerous parasitic diseases, such as echinococcosis and toxocariasis. The aim of the present study was to identify the genus or species of parasitic worms in stool samples obtained from carnivores in Mazandaran Province, Iran, from August 2017 to April 2018.Materials and Methods:A total of 274 fecal samples were collected from carnivores, including dog, fox, wolf, and C. aureus in three areas of Mazandaran Province, Iran. All specimens were examined by centrifugal fecal flotation using a solution of Sheather’s sugar to detect helminths eggs. Then, all samples were assessed using a light microscope. Data analysis was performed by SPSS version 18 (Chicago, IL, USA).Results:In this study, seven genera of helminths were observed, including Ancylostoma, Uncinaria, Toxocara, Dipylidium, Toxascaris, Taenia, and Spirocerca. The prevalence of helminth infections was 97.7% (127 out of 130), 56.7% (51 out of 90), 51.4% (18 out of 35), and 52.6% (10 out of 19), among dogs, C. aureus, foxes, and wolves, respectively. The highest prevalence of Ancylostoma and Toxocara infections occurred in the eastern and central areas of the province (42.1% and 35.7%, respectively).Conclusion:Based on the results of this study, the infection with intestinal zoonotic helminths in carnivores was an important public health factor in Mazandaran. Therefore, these infections can be potentially harmful to humans and other animals.

Helminth eggs with zoonotic potential in the vicinity of public schools in southern Brazil.

The aim of this study was to evaluate environmental contamination by helminth eggs with zoonotic potential that were found in dog feces in the vicinity of elementary schools. Seventy-nine samples of dog feces were collected from 28 municipal schools located in five neighborhoods in Pelotas, Rio Grande do Sul (RS), Brazil. The samples were processed using the Willis-Mollay technique and analyzed using an optical microscope (40X), to identify any parasite eggs present. All neighborhoods were positive and 74.7% of the samples exhibited one or more helminth genera. The agent with the highest prevalence was Ancylostoma spp. (93.2%), followed by Trichuris spp. (18.6%), Toxocara spp. (11.9%) and Toxascaris (1.7%). These data show that there is a need for greater care towards controlling these helminths with zoonotic potential, including responsible pet ownership and daily activities to clean and collect dog feces in the vicinity of schools, because these are places where children play and study.