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Which infection is caused by Spirilla?

  1. Tuberculosis

  2. Syphilis

  3. Staphylococcus

  4. Herpes

The correct answer is: Syphilis

Spirilla is a bacterial genus classified under the spirochete phylum. While options A, C, and D are all caused by bacteria, they belong to different taxonomic groups and not Spirilla in particular. Tuberculosis is caused by Mycobacterium species, Staphylococcus is a type of cocci bacteria, and Herpes is a virus. Therefore, the only correct answer is option B, Syphilis.