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Unit 4

Salmonella

QuestionAnswer
Which of the following is NOT a type of Salmonella carrier: acute, chronic, convalescent, or temporary? "Acute" is not a type of Salmonella carrier. The carrier states refer to individuals who have recovered from a Salmonella infection but continue to excrete organisms for a certain period of time. The 4th type of carrier state is intermittent.
What are the drugs of choice to treat Salmonella infections and why are they not indicated in most cases? Ampicillin and Chloramphenicol are used to treat Salmonella infections in very young patients, or those over 60 years of age. Antibiotics are not normally indicated because they prolong salmonellae excretion and promote development of a carrier state.
What are the three major infections caused by Salmonella? Gastroenteritis (explosive food poisoning), enteric fevers (typhoid fever), and bacteremia/septicemia are the three major infections caused by Salmonella.
What biochemical reaction is used to differentiate Salmonella from Arizona? Malonate utilization can be used to differentiate the two. Salmonella will be negative (green), while Arizona will be positive (blue).
What are the two currently recognized Salmonella species? Salmonella enterica and Salmonella bongori.
Created by: nkniep