<prompt> Definition of PUO includes all of the following except:Undiagnosed after one week of investigationImmuno compromised status should be ruled outTemperature more than 38.3 CFever persisting for more than 3 weeks  <response>: Ans. A. Undiagnosed after one week of investigationUndiagnosed after 1 week of investigation is not included in the latest criteria for PUO.Criteria for diagnosis of PUO: Fever 38.3-degree C 101F on 2 occasions Duration 3 weeks No immunocompromised state Diagnosis not certain after history, physical examination and routine and obligatory investigations. 