Human Papillomavirus
Human Papillomavirus Human papillomavirus (HPV) is a group of more than 100 strains of viruses that cause epithelial tumors of the skin and mucous membranes. There are three types of…
Human Papillomavirus Human papillomavirus (HPV) is a group of more than 100 strains of viruses that cause epithelial tumors of the skin and mucous membranes. There are three types of…
Human Immunodeficiency Virus Infection A retrovirus—human immunodeficiency virus (HIV) type 1—is the primary causative agent of acquired immunodeficiency syndrome (AIDS). The natural history of AIDS begins with infection by the…
Histoplasmosis Histoplasmosis is a fungal infection caused by Histoplasma capsulatum. This disease may also be called Ohio Valley, Central Mississippi Valley, Appalachian Mountain, or Darling’s disease. In the United States,…
Herpes Zoster Airborne Precautions Contact Precautions Herpes zoster (also called shingles) is an acute unilateral and segmental inflammation of the dorsal root ganglia caused by infection with the herpes varicella-zoster…
Herpes Simplex Contact Precautions Herpes simplex virus (HSV) is a recurrent viral infection. HSV type I (HSV-1), which is transmitted by oral and respiratory secretions, affects the skin and mucous…
Hemorrhagic Fever with Renal Failure Syndrome Hemorrhagic fever with renal failure syndrome (HFRS) is a group of clinically similar illnesses found throughout the world. It is caused by a hantavirus,…
Hemolytic-Uremic Syndrome Hemolytic-uremic syndrome (HUS) is a disorder that involves blood clotting within the capillaries, resulting in progressive renal failure. HUS is also related to thrombotic thrombocytopenic purpura and has…
Helicobacter Pylori Infection The bacterial infection H. pylori is most commonly recognized for causing circumscribed lesions in the mucosal membrane, or peptic ulcers. H. pylori releases a toxin that promotes…
Haverhill Fever Haverhill fever—also known as rat-bite fever, sodoku, streptobacillary fever, streptobacillosis, spirillary fever, and epidemic arthritic erythema—is an infection that usually results from handling or being bitten by an…