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**Bacteria can survive intracellularly, avoiding the immune system and antimicrobials
**Bacteria can survive intracellularly, avoiding the immune system and antimicrobials
**May have latent carriage and intermittent excretion in faeces
**May have latent carriage and intermittent excretion in faeces
−
**Stresses e.g. transportaion, illness, parturition, overcrowding promote excretion in carrier animals and may cause clinical signs to be shown
+
**Stresses e.g. transportation, illness, parturition, overcrowding promote excretion in carrier animals and may cause clinical signs to be shown
**Tortoises, terrapins, snakes and other reptiles ofter carry ''Salmonellae''
**Tortoises, terrapins, snakes and other reptiles ofter carry ''Salmonellae''
**Asymptomatic carriage allows faecal spread of infection
**Asymptomatic carriage allows faecal spread of infection