Cаse Study 4: An 8-yeаr-оld femаle was brоught tо the walk-in clinic by her mother. For the last three days she has been complaining that her ear has been bothering her and last night she developed a low fever. Her vaccinations are all up to date, her medical history is unremarkable, and she has had no previous illness; she is a healthy girl. Her mother mentions that she is very active in sports, alternating between swimming and soccer competitions every weekend. The physician collected a culture and stat gram stain of the outer ear canal. The gram stain showed many white blood cells and gram-negative bacilli. The physician then gave the girl antibiotic drops to use twice a day for seven days without waiting for the culture results. Case Study 4 Question 3: What was the likely source of the infection?