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Types of Genetic Testing Genetic tests look for changes in a person's genes. They can also look for changes in the amount, function, or structure of key proteins coded by genes. Genetic tests can look at the DNA or RNA that play a role in certain conditions. Abnormal test results

Latex Allergy What is a latex allergy? Natural rubber latex is a milky fluid found in rubber trees. There is a protein in the fluid that can cause allergic reactions in some people. Common products made using this natural rubber latex include gloves, condoms, rubber bands, and

HIV AIDS What is HIV/AIDS? The term AIDS refers to the most advanced stages of an infection caused by the human immunodeficiency virus (HIV). The current definition of AIDS includes: All HIV-infected people who have fewer than 200 CD4+ T cells (also called T4 cells). These cells

Chickenpox What is chickenpox? Chickenpox is a common childhood disease. It causes an itchy, blistering rash and is easily spread to others. Until the varicella vaccine for chickenpox became available in 1995, chickenpox infection was very common. Almost everyone had been

Whooping Cough (Pertussis) in Adults What is whooping cough (pertussis)? Whooping cough (pertussis) is a very contagious respiratory illness. It mainly affects babies and young children, but adults can also get it. Whooping cough caused thousands of deaths in the 1930s and 1940s

Diphtheria What is diphtheria? Diphtheria is an illness caused by bacteria. There are two types: Respiratory diphtheria. This type affects the throat, nose, and tonsils. Skin (cutaneous) diphtheria. This type affects the skin. It was a common childhood disease in the past. A

Infectious Mononucleosis What is infectious mononucleosis (mono)? Infectious mononucleosis is a type of infection. It causes swollen lymph glands, fever, sore throat, and often extreme fatigue. It’s often spread through contact with infected saliva from the mouth. Symptoms can

Polio (Poliomyelitis) What is polio? Poliomyelitis is commonly called polio. It's an infectious disease. It is caused by 1 of 3 types of poliovirus. Polio is easily spread from person to person. The poliovirus is a virus that can cause paralysis. But most people who are infected

Rubella (German Measles) What is rubella? Rubella is sometimes called German measles. It's a viral infection. It usually causes a mild illness in children. Adults have a slightly more severe illness. But the virus can cause serious birth defects in pregnant people. A vaccine is

Toxic Shock Syndrome (TSS) What is toxic shock syndrome? Toxic shock syndrome (TSS) is an illness that produces symptoms in many systems of the body. Certain bacterial infections release toxins into the bloodstream. These toxins can spread to many body organs. This can cause