A Study of Incidence of Musculoskeletal Disorders in Children Who Have Received Levofloxacin or a Standard Non-Fluoroquinolone Therapy for Acute Bacterial Infection

Inclusion Criteria: * Must have taken at least 1 dose of levofloxacin or standard non-fluoroquinolone therapy as part of a Phase 3 levofloxacin clinical study (LOFBIV-PCAP-003, LOFBO-OTMD-001, LOFBO-OTMD-002) to treat an acute bacterial infection * Parent or legal guardian read and signed the informed consent form Exclusion Criteria: * Participants who do not meet the criteria for enrollment in a prior Phase 3 clinical study of levofloxacin or did not take at least one dose of levofloxacin or standard non-fluoroquinolone therapy in 1 of 3 prior Phase 3 levofloxacin clinical studies (LOFBIV-PCAP-003, LOFBO-OTMD-001, or LOFBO-OTMD-002)