Abstract
Rift Valley fever virus is able to infect multiple organs and cell types, and the course of infection varies between viral strains and between individuals in particular according to age, genetic background, and physiological status. Studies on viral and host factors involve detecting and quantifying viral load at multiple time points and in multiple tissues. While this is classically performed by genome quantification or viral titration, in vivo imaging techniques using recombinant viruses expressing a bioluminescent or fluorescent protein allow noninvasive longitudinal studies on the same group of mice over the entire course of disease and the detection of unsuspected sites of infection. Here, we describe the protocol to monitor and characterize mouse infection with Rift Valley fever virus by in vivo imaging using recombinant viruses expressing light-emitting reporter genes.
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