Medicine: Past and Present

1. Medicine: Past and Present plague infected microbes antibodies bacteria vaccine epidemic immune dispel sterilize Open Court 4th Grade Unit 3 From Mystery to Medicine Lesson 1 Medicine: Past and Present Melissa Lape – Wilson Elementary

2. plague“Use context clues” In the middle of the fourteenth century, an epidemic called the Black Plague swept across Europe, Asia and Africa. A plague that swept through the country left few people alive. plague - a disease that kills a large number of people Melissa Lape – Wilson Elementary

3. infected“Use context clues” Why did some wounds get infected and others heal? Wash that cut on your hand so it doesn’t get infected with germs. Infected - having germs that cause disease Video http://www.cdc.gov/ncidod/op/handwashing.htm Melissa Lape – Wilson Elementary

4. microbes “Use context clues” He found many different kinds of microbes, as these tiny animals are called today. Tiny plants or animals called microbes, or germs, cause disease. microbes - tiny organisms or germs too small to be seen without a microscope. Melissa Lape – Wilson Elementary

5. Antibodies “Use context clues” He tried to think of a way of getting the body to develop these antibodies to attack the disease without having to get smallpox first. A person’s body makes antibodies that fight against the effects of disease germs. Antibodies - special substances produced by the body that destroy or weaken germs Melissa Lape – Wilson Elementary

6. bacteria“Use context clues” Before he could make the connection between these bacteria, or germs, and diseases, he had a more difficult job. Bacteria is another name for germs that cause disease. bacteria – germs Melissa Lape – Wilson Elementary

7. vaccine“Use context clues” Using this information, Pasteur was able to develop a vaccine for anthrax. Getting a vaccine for measles protects you from catching the disease. vaccine – special substances used to protect a person or animal from a disease Melissa Lape – Wilson Elementary

8. epidemic- an outbreak of disease that spreads quickly to many people Melissa Lape – Wilson Elementary

9. Immune- not able to get certain diseases Melissa Lape – Wilson Elementary

10. dispel Prove wrong Melissa Lape – Wilson Elementary

11. Sterilize- To make free from germs Melissa Lape – Wilson Elementary

12. When harmful microbes, or germs, enter the body, they multiply and cause disease. This is called infection. Your body's defenses usually do a killer job of squelching harmful microbes. But sometimes germs multiply faster than the body can handle and you get sick. People come in contact with germs in many ways, including:

13. Contaminated blood: Harmful microbes can enter your body through your bloodstream. • Infected food or water: Dangerous microbes can enter through your mouth if you drink untreated water or swallow food that's uncooked or unwashed. • Disease-carrying creatures: Harmful microbes can enter your body through close contact with infected creatures. • Germy air: Dangerous microbes can spread through the air and enter your nose and mouth when you breathe. http://www.amnh.org/nationalcenter/infection/index.html