It has been observed that many COVID-19 patients develop renal conditions, including acute kidney injury. Older patients or those who have kidney conditions are more likely to die from COVID-19 while hospitalized. Kidneys are known to have a greater level of ACE 2 expression than the lungs. Kidney disease caused by COVID-19 is directly related to ACE2 expression: a study confirmed by electron microscopy that viral particles have been found in the glomerulus of COVID-19 patients.