Sepsis occurs when infections by bacteria or viruses trigger an overreaction of the immune system to start damaging multiple organs in the body. It could lead to organ dysfunction, including pulmonary edema, liver and kidney dysfunctions, or coagulation disorders. With a death rate as high as 40% (at 10% even for mild cases), patients must be promptly treated in the hospital.
The most common causes of sepsis include staphylococcus aureus, streptococcus pneumoniae, vibrio cholerae, as well as the recent coronavirus (COVID-19). These bacteria/ viruses mainly infect the respiratory system and lead to pneumonia, or enter the urinary tract through the urethra and begin to multiply in the bladder or kidney. Other triggers include infections relating to gallstone or appendicitis, etc.