Listeria is found in the environment but is not normal fecal flora in humans. Infection with Listeriais more common in the summer months.The most frequent source of infection with L. monocytogenesis through which of the following?
Raw milk
Vibrio genus involves many species, only some serotypes of V.cholerae are pathogens of cholera. Which of the following causative agents of cholera?
V.cholerae serogroups non O1 and non O139
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