Acquired Immunodeficiency Syndrome, AIDS - Acronym OF ACQUIRED IMMUNODEFICIENCY SYNDROME, a fatal transmissible disorder of the immune system that is caused by the human immunodeficiency virus (HIV). In most cases HIV slowly attacks and destroys the immune system, the body's defense against disease, leaving the infected individual vulnerable to malignancies and infections that eventually cause death. AIDS is the last stage of HIV infection, during which time these diseases arise.

Chickenpox (Varicella) - An infectious disease causing a mild fever and a rash of itchy inflamed pimples which turn to blisters and then loose scabs. 

Coxsackievirus Infections

Cytomegalovirus Infections - Cytomegalovirus is the most common congenital infection of newborn infants, who acquire the virus either in the uterus or during birth. Symptomatic infections in 10 percent of congenital cases cause jaundice, fever, and enlargement of the spleen and liver.

Dengue - Also called BREAKBONE FEVER, OR DANDY FEVER, acute, infectious, mosquito-borne hemorrhagic fever that temporarily is completely incapacitating but is rarely fatal. Besides fever, the disease is characterized by an extreme pain in and stiffness of the joints. Dengue is caused by a virus and may occur, where the carrier mosquitoes breed.

Herpes Simplex - A viral infection caused by a group of herpesviruses, which may produce cold sores, genital inflammation, or conjunctivitis.

Condylomata Acuminata ( --> Genital Warts) - Caused by the same papilloma virus that produces common skin warts and are almost always transmitted through sexual intercourse. The wart begins as a pinhead-sized swelling that enlarges and becomes pedunculated.

Encephalitis, Arbovirus - Inflammation of the brain.

Erythema Infectiosum - Also called fifth disease, ring rubella, or large spotted disease is an acute communicable disease that occurs in local outbreaks and community epidemics. It is associated with a distinctive rash on the face. The rash at first looks as if the infected person has been slapped on the cheek and then acquires a generalized, lacelike appearance. The illness is usually mild and without complications.

German Measles( --> Rubella) - It is generally a mild illness characterized by fever, sore throat, anorexia, swollen glands, headache, runny nose, and red eyes, all of which generally precede the rash. The duration and severity of the illness is variable and complications are rare. The most significant illness caused by the rubella virus occurs when mothers acquire the infection during the first two months of pregnancy. Infants born after such infections may be congenitally deaf, be blind as a result of cataracts, or have heads that are too large or too small.

Glandular Fever - The disease occurs predominantly in persons from 10 to 35 years old, but it is known to appear at any age. Infection of young children usually causes little or no illness, although it does confer immunity.

Hemorrhagic Fevers, Viral

Hantavirus Infections - A virus of a genus carried by rodents and causing various febrile haemorrhagic diseases, often with kidney damage or failure.

Genital Warts - Caused by the same papilloma virus that produces common skin warts and are almost always transmitted through sexual intercourse. The wart begins as a pinhead-sized swelling that enlarges and becomes pedunculated.

Herpes Zoster (Shingles)- Also called Shingles, acute viral infection affecting the skin and nerves, characterized by groups of small blisters appearing along certain nerve segments. The lesions are most often seen on the back and may be preceded by a dull ache in the affected site.

Herpes Genitalis ( --> Herpes Simplex) - The disease may be caused by the herpes simplex viruses identified as type 1 (HSV-1; the cause of cold sores of the lips and mouth) and type 2 (HSV-2). Genital herpes first appears as groups of small blisters on the surface of the penis in men and the vulva in women. The initial infection clears spontaneously within a few days, but herpes commonly recurs with varying frequency thereafter, burning or itching at the infection site containing the lesions. Herpes is generally transmitted only when an active lesion is present.

Herpes Zoster Oticus - A herpesvirus that causes shingles and chickenpox.

Influenza - Also called GRIPPE, OR FLU, an acute viral infection of the upper or lower respiratory tracts that is marked by fever, chills, and a generalized feeling of weakness and pain in muscles, together with varying signs of soreness in the respiratory tract, head, and abdomen.

Human Endogenous Retrovirus

Phlebotomus Fever (Mumps) -  Three-day Fever, or Sand Fly Fever, acute, infectious, febrile disease caused by a virus and producing temporary incapacitation.

Meningitis, Viral - Inflammation of the meninges caused by viral or bacterial infection and marked by intense headache and fever, sensitivity to light, and muscular rigidity, leading (in severe cases) to convulsions, delirium, and and sometimes may lead to death.

Measles - Also called Rubeola, contagious disease caused by a virus, with community outbreaks taking place about every two to four years. Measles is commonest in children but may appear in older persons who have escaped it earlier in life. Infants are immune up to four or five months of age if the mother has had the disease. Immunity to measles following an attack is usually lifelong.

Lassa Fever - An acute and often fatal viral disease usually acquired from infected rats.

Kissing Disease( --> Infectious Mononucleosis) - A disease transmitted by contact with infected saliva, especially mononucleosis.

Infectious Mononucleosis - Formally Infectious Mononucleosis, or Glandular Fever, common infection in humans. The disease occurs predominantly in persons from 10 to 35 years old, but it is known to appear at any age. Infection of young children usually causes little or no illness, although it does confer immunity. Infectious mononucleosis is transmitted primarily by oral contact with exchange of saliva, hence its popular name, "the kissing disease.

Rabies - Contagious and fatal viral disease of dogs and other mammals, transmissible through the saliva to humans and causing madness and convulsions. Also called hydrophobia.

Rift Valley Fever - Viral infection of animals that is transmissible to humans and causes a febrile illness of short duration. Headache, intolerance to light (photophobia), muscle pain, loss of appetite, and prostration are common symptoms.

Respiratory Syncytial Virus Infections - Causes disease of the respiratory tract. It is a major cause of bronchiolitis and pneumonia in young children, and may be a contributing factor in cot death.

Rubella - Also called German Measles, viral disease that runs a mild and benign course in most people. Although rubella is not usually a serious illness in children or adults, it can cause birth defects or the death of a fetus if a mother in the early stages of pregnancy becomes infected.

Subacute Sclerosing Panencephalitis - Measles virus can invade various organ systems and cause hepatitis, appendicitis, and gangrene of the extremities. Persistent measles virus infection can cause a gradual onset of progressive behavioral and intellectual deterioration. Motor incoordination and impairment of speech and sight subsequently develop. The final stages of stupor, dementia, blindness, and sometimes death may occur within six to nine months.

Smallpox - Smallpox is an acute infectious disease caused by a virus, characterized by fever and, beginning about two days later, an eruption that, after passing through the stages of papule, vesicle, and pustule, dries up, leaving more or less distinct scars.

Shingles ( --> Herpes Zoster ) - An acute viral infection affecting the skin and nerves, characterized by groups of small blisters appearing along certain nerve segments. The lesions are most often seen on the back and may be preceded by a dull ache in the affected site.

Warts - Also called Verruca, a well-defined small growth of varying shape on the skin surface, caused by a virus. The wart is composed of an abnormal proliferation of cells of the epidermis; the overproduction of these cells is caused by the viral infection. The most common type of wart is a round, raised lesion having a dry and rough surface; flat or threadlike lesions are also seen. Warts are usually painless, except for those in pressure areas, such as the plantar warts occurring on the sole of the foot.

Yellow Fever - The disease, caused by a virus, infects humans. The virus is transmitted among susceptible hosts by several species of mosquitoes.