1. The diagnostic strategy of patients with Fever is well established even with the Fever of unknown origin. 2. Petersdorf and Beeson initially defined Fever of unknown origin (pyrexia) in 1961 as body temperature higher than 38.3oC on several occasions(Harada et al., 2020), accompanied by more than three weeks of illness and failure to reach a diagnosis after one week of inpatient investigation. For full information : https://bit.ly/3bDEuLa Reference: https://pubrica.com/services/physician-writing-services/ Why pubrica? When you order our services, we promise you the following – Plagiarism free, always on Time, outstanding customer support, written to Standard, Unlimited Revisions support and High-quality Subject Matter Experts. Contact us : Web: https://pubrica.com/ Blog: https://pubrica.com/academy/ Email: [email protected] WhatsApp : +91 9884350006 United Kingdom: +44- 74248 10299