| Definitions |
<p>Infectious diseases kill more people worldwide than any other single cause. Infectious diseases are caused by germs. Germs are tiny living things that are found everywhere - in air, soil and water. You can get infected by touching, <a href='https://medlineplus.gov/foodborneillness.html'>eating</a>, drinking or breathing something that contains a germ. Germs can also spread through animal and insect bites, kissing and sexual contact. Vaccines, proper <a href='https://medlineplus.gov/germsandhygiene.html'>hand washing</a> and medicines can help prevent infections. </p> <p>There are four main kinds of germs: </p> <ul> <li> <a href='https://medlineplus.gov/bacterialinfections.html'>Bacteria</a> - one-celled germs that multiply quickly and may release chemicals which can make you sick</li> <li> <a href='https://medlineplus.gov/viralinfections.html'>Viruses</a> - capsules that contain genetic material, and use your own cells to multiply</li> <li> <a href='https://medlineplus.gov/fungalinfections.html'>Fungi</a> - primitive plants, like mushrooms or mildew </li> <li> <a href='https://medlineplus.gov/parasiticdiseases.html'>Protozoa</a> - one-celled animals that use other living things for food and a place to live</li> </ul> <p >NIH: National Institute of Allergy and Infectious Diseases</p>
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| definition |
Infectious diseases kill more people worldwide than any other single cause. Infectious diseases are caused by germs. Germs are tiny living things that are found everywhere - in air, soil and water. You can get infected by touching, eating, drinking or breathing something that contains a germ. Germs can also spread through animal and insect bites, kissing and sexual contact. Vaccines, proper hand washing and medicines can help prevent infections. There are four main kinds of germs: - Bacteria - one-celled germs that multiply quickly and may release chemicals which can make you sick
- Viruses - capsules that contain genetic material, and use your own cells to multiply
- Fungi - primitive plants, like mushrooms or mildew
- Protozoa - one-celled animals that use other living things for food and a place to live
NIH: National Institute of Allergy and Infectious Diseases
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