Have students individuals or small groups present their fictitious disease with information on a, b and c, and then have the class decide whether the disease is contagious or not and explain their decision. Activity 2 Resources Assessments Activity 1. You may want to initiate discussion with questions such as: What is the difference between an infectious disease and a noninfectious disease?
Food poisoning is generally categorized as an infectious disease because it is usually caused by bacteria such as E. However, you cannot infect other people with your food poisoning as you can infect them with measles. Why are food poisoning and measles both considered infectious diseases?
Why is one considered contagious and the other not? Based on the Disease Chart, what are the major modes of transmission for infectious agents? What is the primary mode for contagious diseases?
Some infections spread to people from an animal or insect, but are not contagious from another human. Lyme disease is an example: You can't catch it from someone you're hanging out with or pass in the street.
It comes from the bite of an infected tick. Contagious diseases such as the flu, colds, or strep throat spread from person to person in several ways. There are a few types of pathogens that react with our bodies.
Once we are infected, these viruses allow the host cells to enter the body. Then these host cells replicate and double themselves, thereby producing more and more viruses. There are several cases wherein these viruses are dominant before multiplying. In this case, a person gets sick again even after recovering. People take antibiotics to kill such viruses, but antibiotics do not work on such dominant viruses.
These dominant viruses can only be stopped by antiviral medicines that help in controlling the virus from spreading. The micro-organisms that are made of a single cell are called bacteria. Bacteria have several shapes and characteristics.
They can remain alive in any environment. Not all bacteria are infectious. The bacteria that affect the body are called pathogenic bacteria. When a virus enters our body, we become susceptible to various bacterial infections. Well, bacteria can be killed by some doses of antibiotics. But one thing has to be kept in mind, i. There are many species of fungi. Out of these, are said to be the ones that can cause sickness to the human body.
Fungi can be seen everywhere, and the infection is caused when they overgrow on any surface. Well, the structure of fungi contains a cell wall, a membrane, and a nucleus, which makes it much harder to kill.
Candida Aurus is one of the fungi species infection that is very hard to kill. Antifungal medications and antibiotics are given to people having fungal infections in their bodies. Parasites are the organisms that feed on the things that the host cell provides. The infections regarding the parasites can be found anywhere, but they are commonly found in tropical and sub-tropical areas. The parasites that can cause sickness to the human body are:.
So, these are the types of infectious diseases that can cause serious illness to the human body. Various antibiotics can heal these diseases, but one must not take overdoses of these medicines. This makes the disease harder to kill. Now, having discussed about infectious diseases, let us take a look at the types of non-infectious diseases. There are four significant kinds of non-infectious diseases, i.
So, let us discuss them in detail. Cardiovascular diseases are caused by zero physical activity and malnutrition. There are chances of high blood pressure, increased blood lipids, obesity, etc. These conditions lead to several heart diseases. There are certain cases where some people are born with cardiovascular diseases.
Some of the cardiovascular diseases include:. These diseases can be cured if proper treatment is given to the patient. People must take care of their health so that such ailments do not reach their bodies.
Cancer is the second-most common disease that can happen to a person of any age and gender.
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