Intestinal pseudomyiasis caused by the larvae of the drone fly Eristalis tenax is sporadically reported and symptoms are varying. We report a ten-year-old boy with intermittent nonspecific abdominal pain. He noticed a larva in his stools which was later identified as the rat-tailed larva of Eristalis tenax. After passing the larva his symptoms subsided. No treatment was given. We aim to register the first case of human pseudomyaisis caused by E. tenax in Denmark.
A cross sectional study of the prevalence and intensity of Balantidium coli in pigs was carried out on a Danish research farm. The prevalence of B. coli infection increased from 57% in suckling piglets to 100% in most pig groups > or = 4 weeks old. The mean number of cysts per gram faeces (CPG) of pigs aged 12 weeks and younger were 52 weeks had significantly higher counts of > or = 865 CPG. Although some lactating sows had very high CPG's, no significant differences in CPG could be detected between the intensities of pregnant sows, lactating sows and empty and dry sows. No human cases of B. coli infection have been published in Denmark though it is zoonotic.
The paper describes a case of disseminated strongyloidosis in a 52-year-old woman living in Volgograd. Filariform and. rhabditiform larvae of the nematode Strongyloides stercoralis were found when analyzing her urine, sputum, and feces. She had been followed up and treated for duodenal ulcer for more than 15 years. During that time, the patient periodically underwent radiographic and ultrasonic studies and clinical and biochemical blood tests. Fecal tests were not been carried out. This case could convince that there was a risk for human strongyloidosis in the arid region having a temperate climate in European Russia and when timely detection of invasion and specific treatment were not performed, there might be disseminated strongyloidosis. The reason for late diagnosis was epidemiological history (possible contact with soil) underestimation and improper-patient examination.
392 patients with amoebiasis, diagnosed at Roslagstull Hospital, Stockholm during 10 yr, are reviewed. The disease is increasing in frequency, due both to increased travelling by Swedish citizens and immigration from non-European countries. The risk for an ordinary charter tourist is, however, rather low. Two-thirds of the patients were symptomatic and one-third were regarded as asymptomatic cyst carriers. The importance of repeated examination of stool samples and examinations using different techniques, especially direct microscopy of fresh faeces, is pointed out. The latter technique is in our laboratory shown to be as efficient in cases with no diarrhoea as in those with diarrhoea, with trophozoites demonstrated in the same frequency in both groups. Sigmoidoscopy with scrapings was seldom of diagnostic value.
In March and April 2009, the Norwegian Institute of Public Health was notified about two groups of schoolchildren with gastroenteritis following a stay at a Norwegian wildlife reserve. Although at first considered a typical norovirus outbreak, an investigation that considered other possibilities was initiated.
A retrospective cohort study was conducted among schoolchildren visiting the reserve in the relevant weeks. A web-based questionnaire was distributed by email. Faecal samples of visitors and employees were analysed. The premises were inspected, and water samples and animal faeces analysed.
We received 141 replies (response rate 84%); 74 cases were identified. Cryptosporidium oocysts were detected in faecal samples from 9/12 (75%) visitors and 2/15 (13%) employees. One employee diagnosed with Cryptosporidium infection helped in the kitchen. Additionally, one pupil was diagnosed with norovirus infection. No food item was identified as a source of the outbreak. Pathogens were not detected in water samples taken in week 12, one week from the start of the outbreak. Escherichia coli, but not Cryptosporidium oocysts, were detected in water samples taken one month later.
Although Cryptosporidium is seldom considered as an aetiological agent of gastrointestinal illness in Norway, this outbreak indicates that it should not be excluded. In this cryptosporidiosis outbreak, the largest in Norway to date, the transmission vehicle was not definitively identified, but a food handler, water, and animal contact could not be excluded. We recommend improving hand hygiene routines, boiling drinking water, and emphasise that people who are unwell, particularly those working in catering, should stay away from work.