What makes situations like this particularly concerning is how easily they can happen.
Barbershops and salons use tools on multiple clients throughout the day. Clippers, scissors, and razors move quickly from one person to the next. If those tools aren’t thoroughly disinfected between uses, they can carry bacteria from one scalp or skin surface to another without anyone realizing it.
In this case, something as simple as a haircut became the starting point for an avoidable infection.