57 research outputs found
Rabies and canine distemper virus epidemics in the red fox population of Northern Italy (2006–2010)
Since 2006 the red fox (Vulpes vulpes) population in north-eastern Italy has experienced an epidemic of canine distemper virus (CDV). Additionally, in 2008, after a thirteen-year absence from Italy, fox rabies was re-introduced in the Udine province at the national border with Slovenia. Disease intervention strategies are being developed and implemented to control rabies in this area and minimise risk to human health. Here we present empirical data and the epidemiological picture relating to these epidemics in the period 2006-2010. Of important significance for epidemiological studies of wild animals, basic mathematical models are developed to exploit information collected from the surveillance program on dead and/or living animals in order to assess the incidence of infection. These models are also used to estimate the rate of transmission of both diseases and the rate of vaccination, while correcting for a bias in early collection of CDV samples. We found that the rate of rabies transmission was roughly twice that of CDV, with an estimated effective contact between infected and susceptible fox leading to a new infection occurring once every 3 days for rabies, and once a week for CDV. We also inferred that during the early stage of the CDV epidemic, a bias in the monitoring protocol resulted in a positive sample being almost 10 times more likely to be collected than a negative sample. We estimated the rate of intake of oral vaccine at 0.006 per day, allowing us to estimate that roughly 68% of the foxes would be immunised. This was confirmed by field observations. Finally we discuss the implications for the eco-epidemiological dynamics of both epidemics in relation to control measures
A Novel Testis-specific GTPase Serves as a Link to Proteasome Biogenesis: Functional Characterization of RhoS/RSA-14-44 in Spermatogenesis
We functionally characterized RhoS/RSA-14-44 as a new member of Rho GTPase subfamily in spermatogenesis, which provides a direct link between Rho family GTPase and the proteasome biogenesis
Sites of feline coronavirus persistence in healthy cats
Feline coronavirus (FCoV) is transmitted via the faecal-oral route and primarily infects enterocytes, but subsequently spreads by monocyte-associated viraemia. In some infected cats, virulent virus mutants induce feline infectious peritonitis (FIP), a fatal systemic disease that can develop in association with viraemia. Persistently infected, healthy carriers are believed to be important in the epidemiology of FIP, as they represent a constant source of FCoV, shed either persistently or intermittently in faeces. So far, the sites of virus persistence have not been determined definitely. The purpose of this study was to examine virus distribution and viral load in organs and gut compartments of specified-pathogen-free cats, orally infected with non-virulent type I FCoV, over different time periods and with or without detectable viraemia. The colon was identified as the major site of FCoV persistence and probable source for recurrent shedding, but the virus was shown also to persist in several other organs, mainly in tissue macrophages. These might represent additional sources for recurrent viraemia
Výzkum a inovace šlechtitelských postupů u okrasných rostlin a tvorba výchozího šlechtitelského materiálu:Novošlechtění okrasných dřevin z aspektu jejich zvýšené odolnosti k biotickým a abiotickým činitelům. Inovace sortimentu květin a) vegetativně množených, b) generativně množených, c) cibulnatých a hlíznatých
Cílem projektu bylo získat nové odrůdy s dobrou zimovzdorností a s rezistencí proti běžným chorobám s vhodným habitem rostliny a s odpovídajícími estetickými vlastnostmi u rodů Weigela, Potentilla a Rhododendron. Další části zprávy popisují výsledky šlechtění rodů Chrysanthenum x grandiflorum, Impatiens, Petunia, Pelargonium x hortorum, Primula vulgaris, Primula x polyantha, Dahlia, Gladiolus a Tulipa
Výzkum a inovace šlechtitelských postupů u okrasných rostlin a tvorba výchozího šlechtitelského materiálu:Novošlechtění okrasných dřevin rodů z aspektu jejich zvýšené odolnosti k biotickým a abiotickým činitelům. Inovace sortimentu květin vegetativně množených. Inovace sortimentu květin generativně množených. Inovace sortimentu květin cibulnatých a hlíznatých.
Cílem projektu bylo získat nové odrůdy s dobrou zimovzdorností a s rezistencí proti běžným chorobám s vhodným habitem rostliny a s odpovídajícími estetickými vlastnostmi u rodů Weigela, Potentilla a Rhododendron. Další části zprávy popisují výsledky šlechtění rodů Chrysanthenum x grandiflorum, Impatiens, Petunia, Pelargonium x hortorum, Primula vulgaris, Primula x polyantha, Dahlia, Gladiolus a Tulipa
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