The same, unknown bacteria is isolated from 20 sick individuals. Their samples were grown in culture and then placed in 10 healthy mice. Those mice started to show signs of a heightened immune response. According to Koch’s postulates what is the next step in determine whether the bacteria is pathogenic?
Answer
A
Classify the bacteria as a noncommunicable disease.
B
Classify the bacteria as a communicable disease.
C
Reisolate it, and determine if it is the original unknown bacteria.
D
Treat the original 20 individuals with antibiotics.
Explanation
Koch’s postulates require the suspected pathogen to cause disease in a healthy host and then be recovered from that host. Since the mice developed signs of an immune response after exposure, the next step is to reisolate the bacteria from them and check whether it matches the original unknown bacteria. Therefore, choice C is correct.
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