Pyelonephritis often occurs against the background of coloproctological surgical interventions, complicating the postoperative period. Preventing infectious and inflammatory diseases of the genitourinary system is one of the important tasks for surgeons. To successfully solve this problem, it is necessary to assess the risk for the patient of developing pyelonephritis before surgery and take measures to prevent it.

Novel coronavirus disease has been known for about a year and a half. Medical scientists worldwide have been united to fight it. 2019 novel coronavirus infection, COVID-19, can harm the heart, kidneys, hematopoietic system, and brain, in addition to the respiratory system. At present, there is a large amount of data on the pathogenetic mechanisms of damage to target organs and systems. Both prevention and treatment methods are getting improved. Many countries started widespread COVID-19 vaccination. Still, there is a lot of problems to be solved by medical scientists and healthcare institutions. This article provides a comprehensive literature review on COVID related organ damage and its effect on multiple body systems.