| Allergy | Autoimmune Disease |
|---|---|
| 1. An allergy is a disease in which the immune system makes an inflammatory response to a harmless antigen. | 1. It is disease when the immune system fails to recognize the body’s own molecules as self and attacks the body’s cells as though they were foreign invaders. |
| 2. Mild or severe. Not not life threatening but require life long precautions. | 2. Life long treatment to reduce damage to body. |
| 3. e.g. itchy eyes, sneezing, and skin rashes, gluten allergy | 3. e.g. arthritis, diabetes |
Differentiate between communicable and non-communicable diseases. Give one example of each.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
(i) Why a person suffering from AIDS cannot fight even small infections ?
(ii) In a slum area, many people are suffering from malaria. Mention any two unhygienic conditions that must be prevailing in that locality.
(iii) Why female Anopheles mosquito feeds on human blood ? [SAII – 2014]
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
State giving reasons whether the following statements are correct or not:
Many vaccines form the public health programme of childhood immunisation for preventing infectious disease. Name any two such diseases.
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
What precautions can you take in your school to reduce the incidence of infectious diseases ?
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor ? Why or why not ?
(a) What is immunisation ?
(b) Define immunity and vaccination.
(c) Define vaccine. .
(d) What type of diseases can be prevented through vaccination ? [SAII -2013]
Conduct a survey in your neighbourhood to find out what the three most common diseases are. Suggest three steps that could be taken by your local authorities to bring down the incidence of these diseases.
What is the alternate name of brain fever? Which vector is responsible for this disease?