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Exposure to tubercle bacilli. Infection with tubercle bacilli. Transmitted by airborne route(M.Bovis: contaminated milk). . Risk of Infection Given Exposure:Largely Exogenous Factors. ParticlesVolume. . x. Exposure time. Particles:Volume:Exposure time:. Production of infectious droplet nucleiVolume of air and ventilationTime of inhaling air with droplet nuclei.
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