Septicemic plague

Septicemic plague is a serious bacterial infection caused by Yersinia pestis, which enters the bloodstream, leading to widespread infection. It can develop rapidly, often from untreated bubonic plague or other infections. Symptoms include fever, chills, weakness, rapid heartbeat, abdominal pain, and in some cases, bleeding under the skin causing darkened or blackened areas. Without prompt treatment with antibiotics, septicemic plague can progress to severe illness or death. It is rare today but remains a health risk in certain regions where the bacteria are present, often transmitted through bites from infected fleas or handling infected animals.