Inclusion Criteria:  Admission to a rehabilitation clinic for patients ≥ 65 years in Stockholm County, Sweden Ability to understand oral and written instructions in Swedish Ability to produce a voided urine-sample  Exclusion Criteria:  Severe cognitive failure and/or disability to understand oral and written instructions in Swedish according to the healthcare-personnel's judgment at the ward End-of-life care Physical disability to produce voided urine-samples Ongoing antimicrobial treatment for symptomatic bacteriuria