The answer is food poisoning. Milady states plainly: "Staph is responsible for food poisoning and a wide range of diseases, including toxic shock syndrome." Staphylococcus — staph for short — is one of the two named bacteria groups (along with streptococci) that show up repeatedly on the Sanitation portion of the Texas barber exam.
The other choices — chicken pox, influenza, and the common cold — are all caused by viruses, not bacteria. Distinguishing which diseases come from bacteria versus viruses is a recurring theme across several Sanitation questions, including the diplococci/pneumonia question below.
Milady Standard Barbering, 6th ed., Ch. 4 (Infection Control), p. 67: "Staph is responsible for food poisoning and a wide range of diseases, including toxic shock syndrome."
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More real Sanitation questions with sourced answers: What Disease Do Diplococci Cause, What Category Do Disinfectants Fall Under, What Organ Does Hepatitis Damage, What Should You Never Mix Bleach With, and 15 more on the Sanitation practice questions page.
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