Diseases

Lyme disease is a multisystemic infectious disease caused by the spirochete bacterium *Borrelia burgdorferi* (and occasionally *B. mayonii*, *B. afzelii*, or *B. garinii*). It is…

Campylobacteriosis is an infectious diarrheal disease caused by bacteria of the genus *Campylobacter*, most commonly *C. jejuni*. It is a leading cause of bacterial gastroenteritis…

Salmonellosis is a common bacterial disease affecting the intestinal tract. It is typically caused by *Salmonella* bacteria, which live in animal and human intestines and…

Shigellosis is an acute, infectious bacterial disease of the gastrointestinal tract characterized by profuse, often bloody diarrhea. It is caused by a group of *Shigella*…

Cholera is an acute diarrheal infection caused by the ingestion of food or water contaminated with the bacterium *Vibrio cholerae*. It is characterized by profuse,…

Typhoid fever is a systemic, life-threatening febrile illness caused by the bacterium *Salmonella enterica* serotype Typhi. It is characterized by prolonged fever, malaise, headache, and…

Dengue fever is a systemic viral illness transmitted by *Aedes* mosquitoes. It is characterized by high fever, severe arthralgia, and myalgia, earning the historical moniker…

Malaria is a life-threatening, vector-borne infectious disease caused by *Plasmodium* parasites. It is transmitted to humans through the bite of an infected female *Anopheles* mosquito….

HIV is a viral infection that attacks the body’s immune system, specifically CD4+ T lymphocytes. If untreated, it progresses to AIDS, characterized by severe immunosuppression,…

COVID-19 is a multisystemic infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It primarily targets the respiratory system but can result…