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Questions On E. Rhusiopathiae Essay

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Part A: 1. Family: Erysipelotrichidae Genus: Erysipelothrix Species: rhusiopathiae 2. E. rhusiopathiae is an incredibly virulent gram positive, rod shaped, facultative anaerobic, (Brooke and Riley, 1999) bacteria that can live outside its host for incredibly long periods of time (Wang et al., 2010). Although it’s not a spore forming bacteria, it can survive in any environment where nitrogen (or nitrogenous matter) is decomposed (including marine locations); some studies say it can survive in soil for 35 days, while other say it can survive in the right soil forever (Wang et al., 2010). 3. This bacteria’s host range is incredibly large as it’s able to infect many vertebrates (including humans, swine, birds, fish – found in the surrounding mucous film, etc.) (Wang et al., 2010), and invertebrates (including various species of flies, mites, lice, ticks, etc.) (Wang et al., 2010). However, swine is known as E. rhusiopathiae’s primary reservoir (Markey et al., 2013), or reservoir host, as it’s found within the tonsils and lymphoid tissues and is commonly expelled through the intestinal tract. (Imada et al., 2003). 4. E. rhusiopathiae is discharged through faeces (main route of transmission), urine, saliva, and nasal secretions into the surrounding environment (i.e. soil, bedding, food, and water) where it can be picked up by other pigs, and therefore, is also indirectly transmitted by asymptomatic carriers (Wang et al., 2010). 5. The incubation period for E. rhusiopathiae has

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