INTRODUCTION Bluetongue (BT), a vector-borne viral disease, primarily affects sheep. Of the 26 serotypes of BTV identified so far, 22 are reported to be circulating in India. Due to an increase in vector population and delays in disease diagnosis, the BT control program heavily relies on rapid and confirmatory diagnosis. Polymerase chain reaction (PCR)-based real-time detection assays may be an...

Penile acquisition of HIV infection contributes substantially to the global epidemic. Our goal was to establish a preclinical macaque model of penile HIV infection for evaluating the efficacy of new HIV prevention modalities. Rhesus macaques were challenged once or twice weekly with consistent doses of SHIVsf162P3 (a chimeric simian-human immunodeficiency virus containing HIV env) ranging from ...

7 Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe Berne), 8 black-backed and 7 side-striped jackals were vaccinated by oral instillation with doses ranging from 1 0·-1 0• median tissue culture infectious doses (TCID50). Significant serum neutralizing anti body titres were achieved in all the jackals, includ in~ those vaccinated with the l...

abstract: peganum harmala l. (zygophylaceae) has been used in a variety of practical applications in medical science. our objective in the current study was to determine the effects of the seed extract on herpes simplex virus type 1 (hsv-1) replication in vero cells. different concentrations (100, 500, 571, 667, 800 and 1000 µg/ml) of the extract were examined. experiments were carried out usin...

Eating infected wild birds may put wild carnivores at high risk for infection with highly pathogenic avian influenza (HPAI) virus (H5N1). To determine whether red foxes (Vulpes vulpes) are susceptible to infection with HPAI virus (H5N1), we infected 3 foxes intratracheally. They excreted virus pharyngeally for 3-7 days at peak titers of 103.5-105.2 median tissue culture infective dose (TCID50) ...

The present work was carried out to evaluate different quantitation techniques when Newcastle disease virus was intended to use as an oncolytic agent. The R 2 B Mukteshwar strain of NDV was procured as lyophilized vaccine. Then application were carried out like haemagglutination test, tissue culture infective dose-50 (TCID50), plaque forming unit (PFU) calculation and real time PCR to enumerate...

The TCID50 is a measure of infectious viral titre in a sample. Traditionally this assay has been carried out using a microscopy based assay. This assay is highly subjective and relies on the correct identification of cytopathic effect (CPE) by eye. To ascertain whether the xCELLigence real-time cell analysis (RTCA) platform could be used to deliver a more objective and robust measure of TCID50,...

INTRODUCTION This paper show the standardization and use of the immunoenzymatic method using infected cells as antigens (EIA-ICC) for routine serological diagnosing of dengue. METHODS In optimizing the test, a dose of 1,000 TCID50 of dengue type 3 virus (DENV-3) was used, and 100,000 C636 cells infected with 1,000 TCID50 (DENV-3) were used. RESULTS The results obtained with EIA-ICC were com...