Follow-up Automatically vs. As-Needed Comparison (FAAN-C) Trial

Inclusion Criteria: * Age \<18 years at the time of randomization * Hospitalization due to a primary diagnosis of pneumonia, skin and soft tissue infection, acute gastroenteritis, or urinary tract infection. * Parent speaks English or Spanish. Exclusion Criteria: * Presence of a comorbid disease that is both chronic and complex * Principal disease required surgical intervention (beyond superficial incision and drainage) * Immunodeficiency * A well-child check-up or post-hospitalization follow-up visit is already scheduled within 7 days of hospital discharge * Parent or participant strongly prefers PRN or automatic follow-up * A medical provider feels strongly that a post-hospitalization follow-up visit is needed within 7 days of hospital discharge * Sibling concurrently hospitalized * Unable to identify a clinic where the participant would receive any needed post-hospitalization follow-up * Diagnosis of pneumonia complicated by: o Receiving a chest tube * Diagnosis of urinary tract infection complicated by: * History of neurogenic bladder or urologic surgery * Renal imaging anticipated within 7 days of hospital discharge * Renal abscess * Diagnosis of skin and soft tissue infection complicated by: * Chronic wound * Postoperative infection * Predisposition to poor wound healing * Discharging with a drain in place * Complicated by necrotizing fasciitis or toxic shock syndrome * Diagnosis of gastroenteritis complicated by: * Hemolytic uremic syndrome