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Query: UMLS:C0851341 (infestation)
 10,121 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Twenty-eight Friesland calves were infested at 7 to 11 months of age with 5 000-45 OOO cercariae of Schistosoma mattheei. At 7 to 8 weeks post-infestation the majority developed an acute intestinal syndrome characterised by diarrhoea or dysentery, anorexia and loss of condition, from which they recovered spontansously. The severity and duration of illness was proportional to the level of infestation. Two heavily infested animals on a low plan of nutrition developed a subacute syndrome in which the initial acute disease was succeeded by prolonged unthriftiness, without diarrhoea, from which recovery occurred when the nutritional status was improved. Both acute and subacute forms of the syndrome were encountered in natural outbreaks.
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PMID:Schistosoma mettheei infestation in the ox: the intestinal syndrome. 87 50

A total of 1,167 stool specimens collected from 0.6-6 years old patients attending King Abdel Aziz University Hospital (KAUH) in Riyadh, were examined for intestinal parasites. Of these 243 (20.8%) were positive. Giardia lamblia (13.5) and Enterobius vermicularis (4.2%), were the commonest parasites found. Other parasites present include Ascaris lumbricoides, Entamoeba histolytica and Hymenolepis nana. Abdominal pain (38.6%) and diarrhoea (27.6%) were the most common causes of referral presented among both males and females examined groups. Out of 211 patients positive for different parasites and showing different causes of referral, 45.5% were accompanied with abdominal pain and 22.3% having pruritus ani, while the percentage of patients having diarrhoea and positive for different parasites (9.5%) are less. It has been concluded that diarrhoea is not a major sign of parasitic infestation in 0.6-6 years old age group. Other causes of referral include, loss of appetite, underweight and failure to thrive which are mainly associated with Giardia lamblia infection.
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PMID:Pattern of intestinal parasitic infection in preschool children in Riyadh, Saudi Arabia. 280 81

One hundred newborn swamp buffalo calves (Bubalis bubalis) from three villages in North-East Thailand were divided equally into treatment and control groups. Treated calves received two doses of a piperazine/thiabendazole mixture (196.6 and 50 mg/kg bodyweight respectively) at three, and again at ten weeks of age. Control calves received placebo treatments at the same times. Egg excretion rates for the roundworms Strongyloides papillosus and Toxocara vitulorum were recorded as high as 85% and 58% respectively during the first three months of life. During the trial period, four calves in the treated group died and one was treated for coccidiosis, compared to seven deaths and nine additional anthelmintic treatments required in the control group. All calves that either died or required additional anthelmintic treatment showed signs of severe enteritis, anorexia and emaciation that was attributed to parasitic infestation. Calves receiving emergency anthelmintic treatment all recovered uneventfully. All except four of the calves that died or became sick did so between 25 and 40 days post partum, with the remainder developing clinical signs of parasitosis before day 50. There was no difference in weight gains between treated and untreated calves over the trial period (16 weeks). Thus, the advantage of anthelmintic treatments as described at three and ten weeks of age in buffalo calves under village conditions was seen as a reduction in the combined morbidity/mortality rate from 32% to 10% (P less than 0.05). From the pattern of infection observed in this study it is suggested that further gains could be made by giving the second treatment at six (instead of ten) weeks of age, and by increasing the dosage of anthelmintic used.
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PMID:Metaphylactic deworming program for buffalo calves (Bubalis bubalis) in North-East Thailand. 343 55

Laboratory findings in an adult bull terrier presented with a history of anorexia and weight loss included the following: severe anaemia, leukocytosis, neutrophilia, lymphopaenia, thrombocytopaenia, Ehrlichia canis morulae in monocytes, hypergammaglo-bulinaemia, a bleeding tendency, icterus and proteinuria. In addition, a high Haemobartonella canis parasitaemia, non-encapsulated yeasts on urinalysis and a localised Demodex canis infestation were present. Treatment for ehrlichiosis was initiated but the dog died. Lesions found were a severe cryptococcal granulomatous pneumonia and cryptococcal colonies in the lungs, bronchial lymph nodes, kidneys, liver, spleen, heart, meninges, eyes and thoracic cavity. In addition, hyphal forms resembling Filobasidiella neoformans, the teleomorph of Cryptococcus neoformans, were seen in lung fine needle aspiration smears, impression smears and lung sections. C. neoformans was cultured from urine, lung and liver. Lung and kidney also yielded Salmonella typhimureum. Cortical atrophy with T-cell depletion of lymph nodes as well as splenic lymphoid follicular atrophy, typical of chronic ehrlichiosis-induced cell mediated immunosuppression, could have predisposed to the fatal disseminated cryptococcis.
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PMID:Fatal disseminated cryptococcosis and concurrent ehrlichiosis in a dog. 350 65

Twenty-two calves between one and 20 days old were infected orally or by contact with cryptosporidia. Calves were maintained as either specific pathogen free, colostrum fed or sucking and were inoculated with either a bacteria free or a contaminated cryptosporidium preparation. Enteritis was characterised by depression, anorexia and diarrhoea and cryptosporidium oocysts were excreted during the clinical course of the illness. In the initial stages of the disease, cryptosporidium infestation was found throughout the small intestine; in the later stage the large intestine was also affected. Villous atrophy and fusion was present at small intestinal sites infected with cryptosporidia and lactase levels were depressed. No lesions were seen in infected large intestinal mucosa. Although the incubation period was longest (five to seven days) in calves infected by contact, there were few differences in the clinical course of disease or the pathological findings between any of the infected calves.
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PMID:Experimental cryptosporidiosis in calves: clinical manifestations and pathological findings. 622 May 9

The Philippines' Department of Health believes that up to 90% of children in the country could be prone to poor physical and mental development because the problem of intestinal worms has gone largely unchecked. A nationwide study conducted over 10 years by the Department of Education, Culture, and Sports found a prevalence of 50-90% in children aged 2-14 years. Up to 30% of the population of 22 million children may have 1 or more of the 3 most common types of soil transmitted helminths: roundworm, hookworm, and whipworm. Infection with such worms through ingestion, skin penetration, or both, often affects children's performance in school because it can stunt growth, decrease physical activity, and cause poor physical and mental development. The most common symptoms of worm infestation are pain, enlargement of the abdomen, loss of appetite and weight, vomiting, insomnia, and irregular respiration. Worms thrive in tropical climates and are endemic to many developing countries. Infestation, however, is easily dealt with; 1 dose of albendazole given once per year for 3 years is enough to eradicate worms in a child. A pilot project launched last year in 2 villages in Aurora province in northern Luzon has thus far yielded encouraging results.
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PMID:Intestinal worms impair child health in the Philippines. 991 19

Forty-six cats with clinical haemobartonellosis were studied; 75 per cent of the cats of known age were two-and-a-half years old or younger, 50 per cent were intact males and 19.5 per cent were castrated males. The predominant signs of the disease were tachypnoea, lethargy, depression, anorexia, infestation with fleas, pale mucous membranes, icterus, emaciation, dehydration, splenomegaly, anaemia, leucocytosis, increased activities of alanine aminotransferase and aspartate aminotransferase, and azotaemia. Thirty-eight per cent of the cats that were tested for feline leukaemia virus (FeLV) antigen were positive, and 22 per cent of those tested for feline immunodeficiency virus (FIV) antibodies were positive. The prevalence of both FeLV and FIV was much higher than in the general Israeli cat population. The cats infected with both Haemobartonella felis and FeLV had a significantly lower body temperature, were more anaemic and the mean cell volume of their erythrocytes was greater than in the cats with haemobartonellosis alone.
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PMID:Retrospective study of 46 cases of feline haemobartonellosis in Israel and their relationships with FeLV and FIV infections. 1216 25

A 38-year-old farmer was apparently well until 5 years of age. At this age, the patient's mother found mildly itchy, raised eruptions over the scalp during combing of the scalp hair. Since then, the eruptions have progressed insidiously to involve the face and other parts of the body, with a preponderance over the face, upper back, and chest, including the palms. The soles, oral cavity, and genital tract were unaffected. The lesions were persistent in nature and showed no remission or exacerbation. Mild to moderate pruritus/discomfort was experienced following sunlight exposure. A prominent, raised eruption appeared on the right side of the forehead 9 years ago, 25 years after the initial eruptions, which in due course ulcerated. It was progressive in nature and acquired a large size. Two years later, it was diagnosed as squamous cell carcinoma, for which liquid nitrogen cryosurgery was performed. There was a recurrence of the lesion at the site of surgery, which was excised 4 months later. Subsequently, there was a sudden flare up at the same site. It was badly infected with maggot infestation. The relentless course of the disease was evident by the appearance of two similar lesions, one on the right half of the nose and the other on the left preauricular region. A short while ago, fatigue and loss of weight were also recorded. Bladder and bowel functions were normal and there was no loss of appetite, hoarseness of voice, or breathlessness. Four of the patient's six children (three sons and one daughter) were reported to have similar lesions all over the body. In addition, nine other relatives were also affected. Accordingly, a total of 14 (12 males and two females) family members were found to be affected from amongst 41 individuals (26 males and 15 females) spread across several generations (Fig. 1). There was a second-degree consanguinity of marriage, with the patient's grandmother and wife's father being brother and sister. Skin surface examination was marked by multiple, discrete, flat-topped, scaly, brownish-black papules of diverse morphology, from hypopigmented macules to verrucous lesions, with a few coalescing to form plaques. The scales were brown, dry, and adherent (Fig. 2a). The lesions were conspicuous by their presence over the face, neck, and front and back of the chest. The extremities were also affected. Nevertheless, the soles and genitalia were spared. The oral mucosae, hair, and nails were normal. Koebner's phenomenon was explicit, whereas Auspitz's sign was not demonstrable. In addition, a perceptible nodulo-ulcerative lesion (size, 3 in x 2 in) with indurated, raised, averted margins was encountered on the right side of the forehead. The ulcer was tender and had a fetid discharge. Necrotic slough was prominent over its base. Similar lesions were located on the left preauricular region and right half of the nose. Hematoxylin and eosin-stained sections prepared from biopsies taken from representative lesions of epidermodysplasia verruciformis and squamous cell carcinoma revealed their diagnostic features. Epidermodysplasia verruciformis showed features of hyperkeratosis and acanthosis with hardly any papillomatosis. Marginal elongation of the rete ridges was present. Extensive vacuolization was a remarkable feature, and was largely confined to the upper stratum Malpighian and the granular cell layer. Some of the vacuolated cells were fairly large; their nuclei were located in the center and had variable pyknosis. The granular cell layer was uniformly thickened, whereas the stratum corneum had a loosely felted (basket-weave) appearance. The dermis was apparently normal (Fig. 2b,c). The other microsection(s) from squamous cell carcinoma were conspicuous by the presence of hyperkeratosis, acanthosis, and irregular masses of epidermal cells, proliferating downwards and invading the dermis. Varying proportions of differentiated squamous cells formed their bulk. These cells were atypical, characterized by variations in size and shape, hyperplasia and hyperchromasia of the nuclei, absence of prickles, chas, characterization of individual cells, and the presence of both mitotic and atypical mitotic figures (Fig. 3b).
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PMID:Epidermodysplasia verruciformis: 14 members of a pedigree with an intriguing squamous cell carcinoma transformation. 1220 66

Dientamoeba fragilis is a non-enteroinvasive, protozoan parasite of the human large intestine with a worldwide prevalence. Considered for years to be a non-pathogenic organism, more recent studies suggest that up to 25% of adult hosts and up to 90% of infested children may manifest clinical disease. D. fragilis infestation has been implicated in chronic gastrointestinal syndromes characterized by protean complaints such as post-prandial abdominal pain, chronic diarrhea, flatulence, fatigue, anorexia, and weight loss. Rarely, D. fragilis infestation is the etiology of acute abdominal pain, mimicking a surgical abdomen. A case report is presented that details a patient with a 1-month history of vague abdominal complaints who presented to the Emergency Department with an apparent episode of acute appendicitis.
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PMID:Dientamoeba fragilis infection presenting to the emergency department as acute appendicitis. 1286 3

Bovine anaplasmosis is a vector-borne disease that results in substantial economic losses in other parts of the world but so far not in northern Europe. In August 2002, a fatal disease outbreak was reported in a large dairy herd in the Swiss canton of Grisons. Diseased animals experienced fever, anorexia, agalactia, and depression. Anemia, ectoparasite infestation, and, occasionally, hemoglobinuria were observed. To determine the roles of vector-borne pathogens and to characterize the disease, blood samples were collected from all 286 animals: 50% of the cows were anemic. Upon microscopic examination of red blood cells, Anaplasma marginale inclusion bodies were found in 47% of the cows. The infection was confirmed serologically and by molecular methods. Interestingly, we also found evidence of infections with Anaplasma phagocytophilum, large Babesia and Theileria spp., and Mycoplasma wenyonii. The last two species had not previously been described in Switzerland. Anemia was significantly associated with the presence of the infectious agents detected, with the exception of A. phagocytophilum. Remarkably, concurrent infections with up to five infectious vector-borne agents were detected in 90% of the ill animals tested by PCR. We concluded that A. marginale was the major cause of the hemolytic anemia, while coinfections with other agents exacerbated the disease. This was the first severe disease outbreak associated with concurrent infections with vector-borne pathogens in alpine Switzerland; it was presumably curtailed by culling of the entire herd. It remains to be seen whether similar disease outbreaks will have to be anticipated in northern Europe in the future.
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PMID:Concurrent infections with vector-borne pathogens associated with fatal hemolytic anemia in a cattle herd in Switzerland. 1529 29


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