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Porcine reproductive and respiratory syndrome(PRRS) was first described in the United States in1987. This syndrome was characterized by abor-tion, premature farrowing, stillborn and mummi-fied pigs, as well as respiratory disease with chron-ic poor performance of nursing and weaned pigsand death. PRRS has been recognized worldwideand is considered to be an economically importantglobal disease since its emergence[1]. Several pro-tocols such as enhancing management, quarantine,disinfection, … 相似文献
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Since the year 1928, when Schilling andDinger first discovered eperythrozoon from ro-dent[1], eperythrozoon has been spread all over theworld[2~6]. Described by Puntaric and his col-leagues in 1986[7], the eperythrozoonosis has beenattached more and more importance on its infectionroute and outbreak character[7~11]. Since mosteperythrozoonosis is a latent infection and the un-successful artificial cultivation of the pathogeny,the research conducting the life circle, transmis-sion, infection r… 相似文献
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Eperythrozoonosis is an infectious diseasecaused by autoeciousness of special blood para-sites-eperythrozoon in erythrocyte and character-ized with symptoms of anaemia, icterus and highfever. The disease is ubiquitous and occurs in allcountries[1~7]. Besides the losses in production,eperythrozoonosis is now discovered a zoonosis,which raised a public health problem[8~12]. Natu-rally, eperythrozoonosis is often an inapparent in-fection with no specific clinical signs, which makesthe disease neg… 相似文献
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