List of infectious diseases

List of Infectious Diseases

Infectious diseases are disorders caused by organisms such as bacteria, viruses, fungi, or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful, but under certain conditions, some organisms may cause disease. This article provides a comprehensive list of infectious diseases, categorized by the type of pathogen that causes them.

Bacterial Infections

Bacterial infections are caused by bacteria, which are single-celled microorganisms. They can be treated with antibiotics, although resistance is becoming a significant issue.

• Tuberculosis
• Streptococcal pharyngitis (Strep throat)
• Bacterial meningitis
• Cholera
• Lyme disease
• Pertussis (Whooping cough)

Viral Infections

Viral infections are caused by viruses, which are smaller than bacteria and require living hosts to multiply.

• Influenza
• HIV/AIDS
• Hepatitis B
• Hepatitis C
• Measles
• COVID-19

Fungal Infections

Fungal infections are caused by fungi, which are more complex than bacteria and viruses.

• Candidiasis
• Aspergillosis
• Histoplasmosis
• Ringworm

Parasitic Infections

Parasitic infections are caused by parasites, which are organisms that live on or in a host organism and get their food from or at the expense of their host.

• Malaria
• Giardiasis
• Toxoplasmosis
• Schistosomiasis

Prion Diseases

Prion diseases are a group of rare, fatal brain diseases that affect humans and animals. They are caused by prions, which are misfolded proteins.

• Creutzfeldt-Jakob disease
• Bovine spongiform encephalopathy (Mad cow disease)

Also see

• Epidemiology
• Antibiotic resistance
• Vaccination
• Public health
• Pathogen