Sepsis is one of the leading causes of mortality worldwide and also one of the leading causes of death in intensive care units. It is an overreaction of the immune system to any viral, bacterial or fungal infection acquired in the community or in the hospital and is a common pathway to death from many different infectious diseases. Respiratory infections, (including severe colds, influenza or covid-19), pneumonia, ventilator-associated pneumonia, infections of the digestive system (including diarrhoeal diseases), urinary system or bloodstream and wound infections are among the leading causes of this life-threatening syndrome. Read more.