Specific Aim 1: To evaluate the impact of a multidimensional (patient, system, clinician) intervention on appropriate antibiotic use for adults with acute respiratory tract infections-- identifying factors that influence successful translation across VA hospital and non-VA hospital acute care. Specific Aim 2: To evaluate the impact of a rapid diagnostic test for c-reactive protein on antibiotic use for adults with acute cough illness when added to a multidimensional intervention.