1,721,097 research outputs found
Misure di frequenza degli eventi morbosi
No full textVengono descritti metodi di calcolo e viene discusso il significato epidemiologico delle diverse misure che esprimono la frequenza dei fenomeni di interesse sanitari
Echinococcosis/Hydatidosis: socio-economic consequences and economic analyses of control programmes
No full textA review is made of the socio-economic consequences of echinococcosis/hydatidosis and of the methods of economic analysis of control programmes. The main costs and benefits (both financial and social) which should be taken into consideration in evaluating health action are also examine
L'epidemiologia nella veterinaria
No full textViene discusso il ruolo dell'approccio epidemiologico nella formazione professionale del medico veterinario el'utilità del metodo epidemiologica nell'affrontare i problemi della sanità pubblica veterinari
Indagine sulla diffusione della fascioliasi bovina in provincia di Firenze
No full textFaecal examination of 342 cattle from 99 farms and liver inspection of 167 cattle from the province of Florence were carried out. 853 animals from other italian provinces were examined for fascioliasis at the same slaughterhouse. Anamnestic data were traced back to get information about the exposure of animals to several risk factors. Fascioliasis was present in about 20% of farms and in about 10& of the coprologically examined animals. Lesions were found in 6% of inspected livers. Grazing practice resulted to represent a significant risk factor of fasciliasis (RR=3.8
Eimeria spp. from Alpine chamois (Rupicapra rupicapra) in Italy
No full textFaecal samples from Alpine chamois (Rupicapra rupicapra) collected in Italian Eastern Alps in the period from July 1995 to July 1997 proved positive for coccidia. Four Eimeria species were identified, namely E. riedmülleri, E. suppereri (first report in Italy) and E. yakimoffmamatschoulskyi, typical of R. rupicapra, and E. faurei, typical of domestic sheep. All these species have already been described in chamois. Cluster analysis, performed
using oocysts and sporocysts measurements, was applied to validate the classification into the four species of the 307 sporulated oocysts examined. Accounting for the theory of Eimeriidae-host specificity, the species identified as E. faurei could be actually a new and morphologically similar Eimeria sp. of R. rupicapra. The reliability of the morphological identification of coccidia, with special reference to those from wildlife, is briefly discussed
Gastro-intestinal nematode infections in four Alpine chamois herds: Influence of host density on helminth egg output
No full textA three years survey on gastro-intestinal nematode egg output was carried out in four Alpine chamois herds (Rupicapra rupicapra rupicapra) from Belluno province (Italy). Data were analysed in order to detect the influence of cattle presence and chamois density on egg output, and to evaluate the stability of host-parasite relationship. As expected, variations related to the season were present, with the major peak of egg output observed in the summer. Results highlighted an unexpected inverse influence of host density on egg counts. The results are in relation to host-parasite relationship stability. Parasites seem to be able to self-regulate in the absence of parasite-induced host mortality. No effect due to cattle presence was detected
Surveys on parasitic diseases: some considerations on sampling
No full textConsiderations about sampling in surveillance of animal parasitic diseases are presented. Proper sampling schemes in the framwork of epidemiologic surveillance should take into account aims of the surveillance activity, expected occurrence of the infection, the desired confidence limits, the accuracy of the diagnostic tests applied
Indagini sulle parassitosi dei vitelli importati
No full textSono stati esaminati per parassiti vitelli da carne tra gli 8 e i 14 mesi di età, al momento della loro importazione da diversi paesi europei. Per strongili gastro intestinali sono stati esaminati 4001 soggetti (prevalenza 36%); per fasciolias sono stati esaminati 799 soggetti (prevalenza 33%); per rogna psoroptica sono stati esaminati 3400 soggetti (prevalenza 1%) e per ipodermosi sono stati esaminati 1148 soggetti (prevalenza 63%
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