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PubMed2001

An epidemiological survey on Cryptosporidium parvum infection of inhabitants in Chorwon-gun, Kangwon-do.

The present study was undertaken to know the infection status of Cryptosporidium parvum among the residents of Chorwon-gun, Kangwon-do in 1993. Total 461 fecal samples were collected from the inhabitants residing in Chorwon-gun during the period of August 12 to September 14, 1993. Fecal smears were prepared by formalin-ether sedimentation, and examined after modified acid fast staining. Of the 461 fecal samples, 9 (1.9%) were positive for C. parvum oocysts. The positive cases were limited to thirties (4) patients, forties (3), and sixties (2), and no oocyst was detected in other age groups. The oocyst positive rate for male was 1.4% and that of female was 2.6%.

Adolescent↗
PubMed2004

Microbiological effects of consuming a synbiotic containing Bifidobacterium bifidum, Bifidobacterium lactis, and oligofructose in elderly persons, determined by real-time polymerase chain reaction and counting of viable bacteria.

BACKGROUND: Because of changes in gut physiology, immune system reactivity, and diet, elderly people are more susceptible to gastrointestinal infections than are younger adults. The gut microflora, which provides a natural defense against invading microorganisms, changes in elderly people with the development of potentially damaging bacterial populations, which may lead to alterations in bacterial metabolism and higher levels of infection. METHODS: A randomized, double-blind, controlled feeding trial was done with 18 healthy elderly volunteers (age, >62 years) using a synbiotic comprising Bifidobacterium bifidum BB-02 and Bifidobacterium lactis BL-01 (probiotics) together with an inulin-based prebiotic (Synergy 1; Orafti). Real-time PCR was employed to quantitate total bifidobacteria, B. bifidum, and B. lactis in fecal DNA before, during, and after synbiotic consumption. Counting all viable anaerobes, bifidobacteria, and lactobacilli and identification of bacterial isolates to species level was also done. RESULTS: Throughout feeding, both bifidobacteria species were detected in fecal samples obtained from all subjects receiving the synbiotic, with significant increases in the number of copies of the 16S rRNA genes of B. bifidum, B. lactis, and total bifidobacteria, compared with the control week and the placebo group. At least 1 of these species remained detectable in fecal samples 3 weeks after feeding in individuals that had no fecal B. bifidum and/or B. lactis in the control week, indicating that the probiotics persisted in the volunteers. Counting of viable organisms showed significantly higher total numbers of fecal bifidobacteria, total numbers of lactobacilli, and numbers of B. bifidum during synbiotic feeding. CONCLUSION: Synbiotic consumption increased the size and diversity of protective fecal bifidobacterial populations, which are often very much reduced in older people.

Aged↗
PubMed2003

A molecular epidemiologic investigation of Salmonella from a meat source to the feces of captive cheetah (Acinonyx jubatus).

Low cheetah (Acinonyx jubatus) birth rates were observed for a long time in a captive breeding facility in which Salmonella, which was possibly present in contaminated beef, was isolated from still-born lion (Panthera leo) cubs. Salmonella, including 14 isolates of Salmonella serovar typhimurium and 19 isolates of Salmonella serovar muenchen, was subsequently isolated 47 times from 378 meat samples at the facility during a 13-mo period. Salmonella, including 26 isolates of S. serovar typhimurium, 10 of S. serovar muenchen, and 11 other serovars, also was isolated 54 times from 119 fecal samples. Only three plasmid profiles were identified in 59 S. typhimurium isolates from both meat and fecal samples. Although random-amplified polymorphic DNA fingerprinting using different primers in the polymerase chain reaction was able to distinguish between S. typhimurium and S. muenchen and to demonstrate similar chromosomal DNA fingerprints in some of the isolates from meat and feces, the results were not consistent enough to prove that the Salmonella in the feces originated from contaminated meat. However, the predominance of only two serovars in the meat fed to carnivores and in the feces of these animals suggests that the meat was the source of the Salmonella organisms in the feces.

Acinonyx↗
PubMedDate not supplied

The "clostridial effect" of selective decontamination of the human gut with trimethoprim/sulphamethoxazole in neutropenic patients.

During 59 periods of hospitalisation, 39 patients with either acute myeloid leukemia (22), acute lymphatic leukemia (9), acute undifferentiated leukemia (1), blastic crisis of chronic myeloid leukemia (6) or high-grade malignant non-Hodgkin lymphoma (1) were subjected to aggressive polychemotherapy after selective decontamination of the gut. The patients were given an amphotericin B suspension in a dosage of 1.2 g/day for two days, after which one tablet of trimethoprim/sulphamethoxazole (TMP/SMZ) (160 mg TMP and 800 mg SMZ) t.i.d. was added to prevent endogenous infections by gram-negative aerobic bacteria or moulds and to maintain the "colonisation resistance" endowed by the anaerobes. During 16 of the 59 periods of hospitalisation, no potentially pathogenic aerobic bacteria were isolated. TMP/SMZ-resistant Escherichia coli were the etiological agent of septicemia in two patients, and resistant Klebsiella pneumoniae and Pseudomonas aeruginosa in two other patients. These bacteria were cultured from the patients' fecal samples prior to the development of septicemia. We observed that long-term prophylaxis with TMP/SMZ modified the normal aspect of the fecal biotop culture, not only by suppressing the aerobic gram-negative bacteria, but also by allowing certain clostridia to appear. We differentiated 207 clostridia from the fecal samples of 29 patients and observed a predominance of TMP/SMZ-resistant Clostridium difficile, Clostridium innocuum and Clostridium clostridiiforme. C. difficile was also isolated from the blood culture of a neutropenic patient treated with TMP/SMZ and proved to be very toxic in the Verocell culture.

Agranulocytosis↗
PubMed2006

Incidence of Neospora caninum and other intestinal protozoan parasites in populations of Swiss dogs.

The protozoan parasite Neospora caninum is one of the most important abortifacient organisms in cattle worldwide. The dog is known to act as definitive host although its potential role as infection source for bovines still remains unelucidated. The aim of the present study was to compile initial epidemiological data on the prevalence and incidence of N. caninum in Swiss dogs acting as definitive hosts. Thus, 249 Swiss dogs were investigated coproscopically in monthly intervals over a period of 1 year. A total of 3289 fecal samples was tested by the flotation technique. Among these, 202 were shown to contain Sarcocystis sp. (6.1%), 149 Cystoisospora sp. (=Isospora sp.; 4.5%) and 25 Hammondia/Neospora-like oocysts (HNlO) (0.7%). All but one sample containing HNlO were from different dogs; one dog shed HNlO at two subsequent time points. Calculation of the yearly incidence for HNlO resulted in the surprisingly high value of 9.2%. Farm dogs exhibited a higher incidence for HNlO than urban family dogs. Thirteen out of the 25 HNlO-samples showed sporulation after 5 days incubation at room temperature. HNlO were further differentiated by species-specific PCR. However, all HNlO-samples were negative for N. caninum, Hammondia heydorni and Toxoplasma gondii. One reason may be the low oocyst density found in most fecal samples, which did not permit us to carry out PCR under optimal conditions. Three out of the 25 HNlO-cases contained enough oocysts to allow further enrichment and purification by the flotation technique. Subsequently, twenty to fifty sporulated HNlO-oocysts were orally administered to Meriones unguiculatus. All gerbils were seronegative for N. caninum at 5 weeks p.i. A N. caninum-seroprevalence of 7.8% was determined by ELISA upon 1132 serum samples collected from dogs randomly selected by veterinarians among their clinical patients.

Animals↗
PubMed1998

A mass outbreak of gastroenteritis associated with group C rotaviral infection in schoolchildren.

In 1988, a mass outbreak of epidemic diarrhea, i.e., consisting of 296 cases, occurred in Fukuoka Prefecture. Fecal samples from patients of the outbreak were cultured for bacteria, but all samples were negative. Although direct electron microscopy (DEM) revealed the existence of rotavirus-like particles (diam. 60-70 nm) in the fecal samples, serological studies could not detect any antigenic relation to the ordinary rotaviruses by the reverse passive hemagglutination (RPHA) and enzyme-linked immunosorbent assay (ELISA) tests or immune electron microscopy (IEM) examination. The outbreak appeared to be caused by group C rotaviruses, based on the pattern of electrophoretic migration of RNA genome segments in polyacrylamide gel electrophoresis (PAGE). Furthermore, IEM examination showed large aggregates of virus particles and antibodies when the virus particles were incubated with a reference serum specific for group C rotaviruses.

Acute Disease↗
PubMed2003

Prevalence and genotyping of Giardia duodenalis from beef calves in Alberta, Canada.

Giardia infections in domestic cattle has come under increasing scrutiny owing to the potential contamination of surface and ground waters through manure distribution on fields and pasture runoff. The objective of the study was to determine the prevalence and genotypes of Giardia duodenalis in beef calves in major beef cow calf farms in Alberta, Canada. Fecal samples were collected from beef calves aged 2-10 weeks at nine farms in Alberta. Samples were examined for the presence of G. duodenalis cysts by immunofluorescent staining. Giardia cysts were found in 168 of the 495 fecal samples examined, with prevalence ranging from 7 to 60% among farms. Genotypic analysis of positive isolates utilizing PCR and sequencing of a 292 bp fragment of the 16S-rRNA locus, revealed the hoofed livestock genotype in 41 of the 42 isolates. One isolate was identical to the Assemblage A genotype. The results of this study demonstrate that beef calves in this area are primarily infected with the livestock genotype which is thought to be specific to artiodactyl hosts and non-infective to humans. This suggests that the Giardia carried by beef cattle may be a minimal zoonotic threat.

Alberta↗
PubMed2003

Biology of Cryptosporidium parvum in pigs: from weaning to market.

Cryptosporidium parvum is commonly identified as infecting domestic livestock and humans. Prevalence of C. parvum in pigs has been reported, however, the duration and infection pattern of naturally acquired Cryptosporidium infections in pigs has not been reported. This study was undertaken to investigate the age of oocyst shedding and duration of natural Cryptosporidium parvum infections in pigs from weaning to market weight. Fecal samples were collected from weaned Yorkshire-Landrace piglets (n=33) twice per week until Cryptosporidium oocysts were detected. Upon oocyst detection, fecal samples were collected three times per week and pigs were monitored throughout the study for diarrhea and examined after concentration and immunofluroescent staining. Cryptosporidium isolates were genotyped by polymerase chain reaction to amplify the HSP70 gene which was subsequently sequence analyzed. All 33 pigs shed oocysts some time during the study. The mean age of initial oocyst detection was 45.2 days post-weaning with the mean duration of infection 28.7 days. Mean number of Cryptosporidium oocysts was low and declined to zero prior to study completion. Episodes of diarrhea were not associated with oocyst excretion. Genetic sequences were obtained for 10 of the pigs. All of the 10 isolates aligned as the Cryptosporidium parvum 'pig' genotype. This study demonstrates that the age and duration of oocyst shedding in pigs infected with C. parvum porcine genotype is different from other livestock species.

Aging↗
PubMed2006

Prevalence of noroviruses and sapoviruses in swine of various ages determined by reverse transcription-PCR and microwell hybridization assays.

Noroviruses (NoVs) and sapoviruses (SaVs) are emerging enteric pathogens that cause diarrhea in humans and animals. Porcine genogroup II (GII) NoVs replicate in pigs, but their pathogenesis is undefined. The porcine SaV/GIII/Cowden/80/US strain causes diarrhea and intestinal lesions in pigs. Recently, genetically diverse porcine NoVs (genotypes 11, 18, and 19 within GII) and SaVs comprising at least two genogroups (GIII and GVI?/JJ681-like) and two unclassified strains (G?/QW19 and G?/LL26) were identified; however, their prevalence has not been reported. To investigate the prevalence of porcine NoVs and SaVs, 621 fecal samples were collected from swine of various ages from seven swine farms and one slaughterhouse in three states in the United States. Fecal samples were tested by reverse transcription-PCR and microwell hybridization assays with porcine NoV- and SaV-specific primers and probes, respectively. Porcine GII NoVs were detected exclusively from finisher pigs with an overall prevalence of 20%. Porcine GIII SaVs were detected in 62% of pigs, with the highest prevalence in postweaning pigs and lowest in nursing pigs. Porcine GVI?/JJ681-like SaVs and the G?/QW19-like SaVs were detected infrequently in pigs. The G?/LL26-like SaVs were detected mainly in younger pigs. Because some porcine NoVs and SaVs are genetically or antigenically related to human strains and recombinants within NoVs or SaVs occur for human and pig strains, the high prevalence and subclinical infection rate of these viruses in pigs raise questions of whether pigs may be reservoirs for human strains or for the emergence of new human and porcine recombinants.

Abattoirs↗
PubMed2004

Survey of parasites and bacterial pathogens from free-living waterfowl in zoological settings.

To determine if free-living waterfowl residing in a zoological setting pose health risks for its animal collections, visitors, and employees, 450 fecal samples were collected and cultured for the presence of Campylobacter jejuni, Escherichia coli, Salmonella spp., and Pasteurella multocida. A survey of endoparasites infecting the waterfowl was also conducted. Sixty-seven percent, 42%, and 1.7% of the samples tested positive for E. coli, C. jejuni, and Salmonella spp., respectively. No P. multocida was isolated from the sampled population. Antimicrobial susceptibility testing for the bacterial isolates demonstrated that a majority of the isolates were susceptible to the antibiotics tested. A survey for parasites revealed 16% of the samples had coccidia oocytes; 8% of the sample had spirurid ova; and 17% of the sample had strongylate-type nematode ova. Ascaris spp. ova, Capillaria spp. ova, oxyurid ova, and mites were also noted in some fecal samples.

Animals↗
PubMed2003

Identification of assemblage A Giardia in white-tailed deer.

Fecal samples were collected from hunter-killed white-tailed deer (Odocoileus virginianus) during a managed hunt in a central Maryland county. Fecal samples were cleaned of debris and concentrated by CsCl density gradient centrifugation and stained with MerIFluor reagents. Stained samples were examined by fluorescent microscopy for the presence of Giardia sp. cysts. One of 26 samples was found to be positive for Giardia sp. Polymerase chain reaction amplification using primers directed to the beta-giardin and TPI genes identified the same sample as the only positive one. Sequencing of the beta-giardin and TPI genes revealed that the Giardia sp. belonged to assemblage A, a genotype infectious for humans and also reported in a small percentage of cattle. This is the first report of assemblage A Giardia sp. in deer and suggests that deer could be a potential source of infectious cysts for humans and cattle.

Animals↗
PubMed2004

Effects of microcin 24-producing Escherichia coli on shedding and multiple-antimicrobial resistance of Salmonella enterica serotype typhimurium in pigs.

OBJECTIVE: To investigate the effect of an Escherichia that produced microcin 24 (Mcc24) on shedding of of Salmonella enterica serotypeTyphimurium in swine and evaluate evidence of in vivo activation of the Mcc24-mediated, multiple-antibiotic resistance (mar) operon. ANIMALS: 36 crossbred weaned pigs. PROCEDURE: 24 pigs were allocated to 2 groups (12 pigs/group). Pigs in 1 group received daily oral administration of an Mcc24-producing E coli, whereas the other group received a non-Mcc24-producing E coli. All pigs were challenge exposed with Salmonella Typhimurium chi4232. A third group of 6 pigs received Mcc24-producing E coli and was challenge exposed with an Mcc24-sensitive, marA-deleted strain of Salmonella Typhimurium 4232. After challenge exposure, fecal samples from all pigs were cultured to detect shedding of Salmonella Typhimurium and Salmonella Typhimurium isolates were screened for resistance to ciprofloxacin. Fecal samples were collected throughout the study, and tissue samples were collected during necropsy. RESULTS: Differences in shedding of Salmonella Typhimurium were not detected between groups receiving Mcc24-producing or non-Mcc24-producing E coli. No significant differences were found in quantitative analysis between groups receiving Mcc24-producing and non-Mcc24-producing E coli. Evidence of mar activation was not detected. CONCLUSIONS AND CLINICAL RELEVANCE: Microcin-producing E coli did not exert an effect on shedding of SalmonellaTyphimurium or mar activation in pigs. It may be difficult or impractical to create the conditions required for Mcc24 to be an effective part of a food safety intervention to reduce shedding of Salmonella Typhimurium.

Animals↗
PubMed1995

Management factors related to Salmonella shedding by dairy heifers.

In a national survey of dairy operations with > or = 30 milking cows, fecal samples from 6861 preweaned dairy heifer calves on 1063 operations were tested for Salmonella. One hundred forty-five (2.1%) of the fecal samples from 79 (7.4%) of the farms tested positive for Salmonella. A multivariate logistic regression model revealed that medicated milk replacer and hay fed to dairy heifers from 24 h of age until weaning were associated with a reduced risk of Salmonella sheddings, as was calving in an individual animal area within a building.

Animal Feed↗
PubMed2000

[Occurrence of verotoxin-producing Escherichia coli (VTEC) in fecal swabs from slaughter cattle and sheep--an observation from a meat hygiene view].

Fecal samples from 544 beef cattle and 140 sheep were investigated by PCR for verotoxin (VT)-producing Escherichia coli (VTEC) without and with an enrichment step. 6.1% (after enrichment 14%) of cattle samples and 10% (after enrichment 29.2%) of sheep samples were VT-PCR-positive. Moreover, a noticeable age-depending prevalence in cattle was found. Eleven VTEC strains isolated from fecal samples of 5 cattle and 6 sheep were taken for further characterization. None of the strains belonged to serogroup O157. But, as reported previously, we also found in this study strains with virulence genes that are associated with increased pathogenicity. The importance of slaughter hygiene and of bacteriological monitoring of carcass contamination has to be pointed out.

Animals↗
PubMed1985

[Frequency of FY and K99 pili in strains of Escherichia coli isolated from diarrheal calves in France].

Epidemiological study of bovine E. coli shows that the FY E. coli pilus which has previously been described and is also known as Att25, can be found in 30 of 415 fecal samples of diarrheic calves, eight of them carrying both FY and K99 pili. The K99 E. coli pilus is present in 86 fecal samples. Strains carrying both FY and K99 pili account for 9% of K99 enterotoxigenic E. coli. K99-, FY+ E. coli do not produce the thermostable enterotoxin (TSa). K99+, FY- or K99+, FY+ E. coli are present mainly in calves under three days old but K99- FY+ E. coli are found whatever the age of the animal.

Age Factors↗
PubMed2004

Dramatic increase in prevalence of fecal carriage of extended-spectrum beta-lactamase-producing Enterobacteriaceae during nonoutbreak situations in Spain.

The occurrence of extended-spectrum beta-lactamase (ESBL)-producing isolates has increased worldwide. Fecal carriage of ESBL-producing isolates has mainly been detected in nosocomial outbreaks, and few studies have evaluated fecal carriage during nonoutbreak situations and among patients in the community. We have studied the prevalence of ESBLs in 1,239 fecal samples from 849 patients (64.1% of whom were ambulatory) in 1991 and have compared the prevalence data with those obtained in 2003 for 400 fecal samples from 386 patients (75.9% of whom were ambulatory) and 108 samples from independent healthy volunteers. Samples were diluted in saline and cultured in two MacConkey agar plates supplemented with ceftazidime (1 microg/ml) and cefotaxime (1 microg/ml), respectively. Colonies were screened (by the double-disk synergy test) for ESBL production. The clonal relatedness of all ESBL-producing isolates was determined by pulsed-field gel electrophoresis with XbaI digestion; and the ESBLs of all ESBL-producing isolates were characterized by isoelectric focusing, PCR, and sequencing. The rates of fecal carriage of ESBL-producing isolates increased significantly (P < 0.001) in both hospitalized patients and outpatients, from 0.3 and 0.7%, respectively, in 1991, to 11.8 and 5.5%, respectively, in 2003. The rate of occurrence of ESBL-producing isolates among healthy volunteers was 3.7%. All ESBL-producing isolates recovered in 2003 were nonepidemic clones of Escherichia coli. ESBL characterization revealed an increasing diversity of ESBL types: TEM-4 and CTX-M-10 were the only enzymes detected in 1991, whereas TEM-4, TEM-52, SHV-12, CTX-M-9, CTX-M-10, CTX-M-14, and a CTX-M-2-like enzyme were recovered in 2003. The ESBL-producing isolates recovered from outpatients in 2003 corresponded to a CTX-M-9-type cluster (62.5%) and SHV-12 (31.2%), whereas TEM-4 was detected only in hospitalized patients. The frequencies of coresistance in isolates recovered in 2003 were as follows: sulfonamide, 75%; tetracycline, 64.3%; streptomycin, 57.1%; quinolones, 53.5%; and trimethoprim, 50%. The increased prevalence of fecal carriage of ESBL-producing isolates during nonoutbreak situations in hospitalized patients and the establishment of these isolates in the community with coresistance to non-beta-lactam antibiotics, including quinolones, represent an opportunity for these isolates to become endemic.

Electrophoresis, Gel, Pulsed-Field↗
PubMed1999

[Animals as a source of infections for humans--diseases caused by EHEC].

EHEC (enterohaemorrhagic E. coli) bacteria are new, only since 1982 recognized zoonotic pathogens. EHEC differ from E. coli intestinal commensales by the fact that they are lysogenic infected with bacteriophages, which carry the genetic information for the production of shigatoxins (Stx type 1 and/or 2). Due to the obligatory released Stx EHEC are classified also among the Shigatoxin producing E. coli (STEC). EHEC are capable of causing a Hemorrhagic Colitis and some sequelae of diseases such as the haemolytic uraemic syndrome. Due to their virulence factors they can be divided into typical and non-typical EHEC. Typical EHEC possess a pathogenicity island (Locus of Enterocyte Effacement) harboring genes, which apart from the characteristic necrotic activity of Stx enable the pathogens to closely attach to the epithelial cells of the intestinal mucosa and to destruct the microvilli. Additionally a so-called virulence plasmid codes for the production of a haemolysin, a peroxidase-katalase, an enterotoxin as well as a serine protease. EHEC are one of the world-wide most important causes of foodborne infections. Depending upon the country, most of the incidences in 1998 varied between 1 to 3 cases per 100,000 inhabitants. Since EHEC are only notifiable in a few countries, one must count however on substantially higher numbers. In Germany the estimated incidence is about 13 cases per 100,000 inhabitants. Since the first EHEC outbreaks were recognized in humans, studies investigating the prevalence of EHEC within animals were repeatedly performed. From the outset one assumed that cattle are a possible reservoir. Actually EHEC were isolated from fecal samples world-wide (typical and non-typical EHEC) from a large percentage of cattle (> 50%). Besides EHEC were isolated sporadically from fecal samples of other animals and healthy humans. The EHEC bacteria are shed by infected humans and animals, in particular by infected ruminants. They are spread over manure, slurry, sewage etc. Humans can get infected directly by contact with infected persons or animals or indirectly by contaminated food, water etc. The clinical outcome within humans appears as aqueous to bloody diarrhea. Beyond that approximately 5 to 10% of the patients develop the haemolytic uraemic syndrome. In contrast to humans, animals are mostly infected clinically inapparent. The therapy is based upon a symptomatic treatment. At present in man the control of EHEC infections concentrates on a particularly strict hand hygiene after the contact with infected humans and animals (above all ruminants). Since EHEC are heat sensitive, the prophylaxis by sufficient heating of risk food (raw milk, ground beef) is of special importance. In veterinary medicine above all EHEC infections must be controlled in ruminants, which are the primary reservoir. Due to the wide spread of EHEC in the ruminant population it is not realistic to demand an EHEC free cattle stock. Since EHEC are spread only via fecal excretion, at present it is most important to reduce the fecal shedding and to avoid fecal contamination of food of animal origin. In detail prophylactic hygienic measures concerning the farm management, the feeding hygiene, the food hygiene, the meat hygiene as well as the food hygiene are available.

Animals↗
PubMed2005

Natural infection by Giardia sp. and Cryptosporidium sp. in dairy goats, associated with possible risk factors of the studied properties.

Visits were made to six farms raising dairy goats located in the mountain region of the state of Rio de Janeiro, Brazil, seeking to identify parasitism by Giardia sp. and Cryptosporidium sp. During the visits, fecal samples were collected from approximately 10% of the stock of each property. A questionnaire was given to the keepers on each property to obtain data for epidemiological analysis. A total of 105 fecal samples was collected, 56 from adult animals (over 12 months of age) and 49 from juvenile animals (less than 12 months). The fecal material was processed and subjected to the centrifuge-flotation technique and to staining with safranine-methylene blue. Protozoans of the genus Cryptosporidium were found at two properties, where the hygiene conditions of the installations were considered average and the stalls were made of wood slats raised from the ground. A total of five (4.8%) of the samples was found to be positive for the presence of this protozoan, all from juvenile animals. Cysts of the genus Giardia were found at two properties. Of the 105 samples analyzed, the protozoan was detected in 15 (14.3%), all in juvenile animals, and animals in the age range of 1-3 months had significantly more infections. Age, sanitary condition of the stalls and stalls made of wood slats and raised from the ground, can be pointed out as possible risk factors for infection by Giardia sp. and Cryptosporidium sp. The study reports for the first time the occurrence of Cryptosporidium sp. and Giardia sp. in goats in the state of Rio de Janeiro.

Animal Husbandry↗