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| AIDS |
a serious disease caused by a virus that stops the body from being able to protect itself from other diseases. "AIDS" stands for "acquired immune deficiency syndrome." |
| chicken pox |
a disease that produces a fever and a rash. It is caused by a virus passed from person to person. |
| cold |
a common sickness that causes sneezing, coughing, and a runny nose. Colds are caused by a virus. [1/7 definitions] |
| Covid-19 |
a serious, sometimes fatal, disease caused by a certain type of virus called a "coronavirus." This particular coronavirus broke out for the first time in 2019, and the disease spread all over the world in 2020. "Co" in Covid stands for "corona," "vi" stands for "virus," and "d" stands for "disease." The number 19 refers to the year 2019. The name "Covid-19" is oftened shortened to "Covid." |
| diarrhea |
Diarrhea is a problem with your intestines. You might get it if you eat food that is bad or drink something that contains bacteria, but people usually get it from diseases caused by a virus. Diarrhea gives you pain in your belly and sometimes makes you run to the bathroom! In the bathroom, waste that is full of liquid leaves your body very quickly. The process stops for while but usually returns. Ordinary diarrhea doesn't usually last more than a few hours, but diarrhea can be serious if people have it for a few days or longer because their bodies lose too much water. |
| HIV |
abbreviation of "human immunodeficiency virus." HIV is the virus that causes a disease called AIDS. AIDS is a serious disease that stops the body from being able to protect itself from other diseases. Having the HIV virus does not always lead to AIDS if one receives treatment. |
| influenza |
a disease caused by a virus in humans and some animals; flu. Influenza causes fever, indigestion, coughing and muscle pain. |
| measles |
(used with a singular or plural verb) a serious and very contagious disease that causes a fever and red spots on the skin. Measles is caused by a virus. |
| polio |
a short form of "poliomyelitis," a disease caused by a virus that attacks the spinal cord and damages the nervous system. Poliomyelitis affects mainly children and can lead to paralysis or deformed limbs. |
| poliomyelitis |
a disease caused by a virus that attacks the spinal cord and damages the nervous system. Poliomyelitis affects mainly children and can lead to paralysis or deformed limbs. Jonas Salk invented a vaccine that prevents poliomyelitis. |
| rabies |
a disease that is caused by a virus and can kill people, dogs, and other mammals. Symptoms of rabies are foaming at the mouth and violent or strange behavior. A person can get rabies if scratched or bitten by an animal that has the disease. |
| virus |
a tiny organism that can reproduce only in living cells. Viruses cause disease in humans, animals, and plants. [1/3 definitions] |
| wart |
a small, hard, raised growth on the skin that is caused by a virus. Warts usually grow on hands or feet. [1/2 definitions] |
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