Louisiana Esthetics State Board Practice Test 2026 – All-In-One Guide to Master Your Exam Success!

Spirilla are a type of bacteria characterized by their spiral shape, and they are known to be associated with certain diseases, one of which is syphilis. This sexually transmitted infection is caused by the bacterium Treponema pallidum, which has a spirilla form.

In terms of other options, acne is primarily linked to the bacteria Propionibacterium acnes, which is not spiral but rather a rod-shaped bacterium. Folliculitis, which involves inflammation of hair follicles, is typically caused by Staphylococcus aureus, also a rod-shaped bacterium. Impetigo, a highly contagious skin infection, is most often caused by Streptococcus pyogenes or Staphylococcus aureus, both of which do not fit the category of spirilla.

Understanding the specific shapes and classifications of bacteria can be crucial in identifying the infections they cause, highlighting why syphilis is correctly associated with spirilla.