نتایج جستجو برای: viral shedding
تعداد نتایج: 163404 فیلتر نتایج به سال:
A point mutation in the DNA polymerase gene in equine herpesvirus type 1 (EHV-1) is one determinant for the development of neurological disease in horses. Three recently conducted infection experiments using domestic horses and ponies failed to detect statistically significant differences in viral shedding between the neuropathogenic and non-neuropathogenic variants. These results were interpre...
Herpes simplex virus type 2 (HSV-2) causes life-long infection with episodic reactivation. For decades, antiviral drugs, such as guanosine analogues (aciclovir and its prodrug valaciclovir), have been used to treat or prevent frequent and painful episodes. One outstanding question about HSV is why transmission is not stopped by these suppressive treatments. In The Lancet, Christine Johnston and...
Virulent Newcastle disease virus isolates from the 1971 and 2002 U.S. outbreaks are of the same serotype but a different genotype than current vaccine strains. Prior experiments with inactivated vaccines in chickens show significantly less virus shed in birds vaccinated with a homologous vaccine (same genotype as challenge) compared to chickens vaccinated with genotypically heterologous vaccine...
Bovine viral diarrhoea virus (BVDV) infection of cattle causes a diverse range of clinical outcomes from being asymptomatic, or a transient mild disease, to producing severe cases of acute disease leading to death. Four groups of calves were challenged with a type 1 BVDV strain, originating from a severe outbreak of BVDV in England, to study the effect of viral dose and immunosuppression on the...
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