[A new outbreak of trichinosis: 117 cases in the Midi-Pyrénées region. Epidemiology, clinical features and management].
Catherine LeclercB. MarchouL. SaillerEmmanuel BonnetMariló Marimón MorónS AlcaydeM ServatC DuchenC HemeryJean‐François MagnavalP Massip
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Trichinosis
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The purpose of the study was assessment of the epidemiological situation of trichinellosis in Poland in 2011.The evaluation was carried out on the basis of the analysis of data from the bulletin "Infectious diseases and poisonings in Poland. 2010". information from the questionnaires of individual cases and epidemiological investigations of the outbreaks of trichinellosis sent by the Sanitary-Epidemiological Stations and on data from Demographic Research Department of the Central Statistical Office. Cases were classified according to the current case definition.In 2011. Poland recorded 23 cases of trichinellosis cases. The incidence was 0.06/100,000. There were reported 10 confirmed cases and 13 probable. There were no deaths from trichinellosis, but over 91% of infected persons were hospitalized. In 2011 three outbreaks of trichinellosis were recorded. One of them occurred in Dolnoślaskie district, where cases of the infection are recorded sporadically. The epidemiological investigations established that the cause of the outbreak was consumption of wild boar meat products, mainly raw sausage. Trichinella containing meat products are prepared primarily for personal use. but are also distributed among family and friends.The annually repeating outbreaks of trichinellosis mainly among family members indicates insufficient awareness of the risk of parasitic diseases caused by consumption of products containing raw or half raw meat of animals. Of the particular importance is to inform those who will give the carcases of animals to test about the limitations of the test method used.
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Trichinellosis is one of the most important foodborne diseases in the Eastern European countries. The main objective of this study was to investigate the epidemiological patterns of trichinellosis outbreaks that occurred between 2005 and 2016 in Vojvodina, a northern province of the Republic of Serbia. The average incidence was 3.5 per 100,000 inhabitants. A total of 828 people acquired the infection. The disease occurred in all age groups, slightly more often in males, and quite frequently in a severe form considering the high share of hospitalised patients and the fatal outcome rate (41.6 ± 31.1% and 0.4%, respectively). Trichinella spiralis was confirmed as the causative agent in eight outbreaks. The outbreaks usually occurred among family members due to the consumption of pork or traditional pork products from not tested backyard pigs. Veterinary control measures and the education of consumers and farmers should be implemented to control this zoonotic disease.
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An outbreak of trichinosis occurred in the city of Zhengzhou, central China, between December 1995 and February 1996, affecting 85 of the administrative units into which the city is split. Of 297 subjects from eight of the affected units, 54% were seropositive for Trichinella and 41% had symptoms consistent with acute trichinosis. Of the 490 subjects who had eaten at one particular dumpling restaurant 1–5 weeks before the outbreak and who were traced, 291 (59%) were seropositive and 212 (43%) had been or were ill. Most of the infections were in manual workers, cadres and merchants aged 20–49 years. Most of those who had been infected failed to develop gastro-intestinal symptoms or a cutaneous rash. Eyelid oedema was only seen in the early stages of the infection, the main clinical manifestations being fever of long duration and tiredness. Surprisingly, six cases had no marked symptoms after repeated infection. Eosinophilia (eosinophils > 7% of leucocytes) was noted in 71 (55%) of the 130 cases in which blood cells were counted.When 212 sera were tested for antibodies to Trichinella, seropositivities were found to increase from 89.1% (IFAT) or 87.7% (microprecipitin test) at presentation to 100% (both tests) 1 week after treatment with albendazole. All those treated were cured.The outbreak was one of the most extensive, single-source outbreaks ever recorded in China, probably with > 600 infections and > 300 clinical cases. The entire episode was attributed to the ingestion of undercooked pork dumplings at one restaurant.
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The aim of the current study was to assess the epidemiological situation concerning the emergence of a pertussis outbreak, as well as potential contributing factors and vaccine effectiveness. A retrospective epidemiological description and an analysis of the outbreak among students were performed. The basic school in Adavere had a total of 150 students in 2003. Of these, 54 cases of pertussis, with median age 12 y, all corresponding to clinical case definition, were identified with an attack rate of 36%. Regarding confirmation of the diagnosis, out of all clinical cases, 18 were confirmed by laboratory testing (2 by isolation of B. pertussis and 16 serologically based on single sera) and 36 with epidemiological linkage only. Of all the students with pertussis, 35 (65%) had received 4 doses and 6 (11%) 3 doses of DTwP vaccine; 13 (24%) students had received fewer than 3 doses or were unvaccinated. The contributing factors in generating this outbreak were close epidemiological contacts, late identification of pertussis diagnosis in the primary, secondary and later cases, as well as a too late initiated active surveillance. In this outbreak, low vaccine effectiveness and low vaccination coverage also played an important role.
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Presented here is a description of trichinosis outbreak associated with bear meat consumption in the form of basturma and chips. The clinical, epidemiological, and laboratory characteristics of the disease course in observed three patients are given. In addition, a review of modern literature on the problem of trichinosis is presented, including issues of etiology, epidemiology, developmental cycle of trichinella, and features of disease clinical course, diagnosis, and treatment. Criteria to be looked at when trichinosis is suspected are also discussed.
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Objective To analyze the epidemiological characteristics and regularity of varicella in Panyu District from 2010 to 2012 and discuss the measures of preventing and controlling varicella.Methods The data of varicella cases and outbreaks reported during 2010 ～ 2012 in Panyu were analyzed by descriptive epidemiology method.Results A total of 8 380 varicella cases were reported from 2010 to 2012.The average incidence of varicella during 2010 ～ 2012 was 161.14 /100 000.The cases occurred around the whole year and had the typical double peak feature,which appeared frequently in the winter and late spring and early summer.Varicella cases mainly occurred in students,children in kindergartens and scattered children,which accounted for 81%.A total of 11 outbreaks of varicella were reported in the same period,which occurred all in schools and kindergartens.Conclusions Kindergarten children and primary school pupils have a high incidence of varicella.Surveillance should be strengthened in kindergartens and elementary schools,so as to reduce the outbreaks of varicella and further decrease the incidence of varicella.
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