| Infectious Diseases | Non-Infectious Diseases |
|---|---|
| 1. Caused by external factors e.g. pathogens | 1. Caused by internal factors e.g. genetic abnormality |
| 2. Diseases can spread unhealthy person to healthy person. | 2. Diseases do not spread from infected to a healthy person. |
| 3. Infection can spread and infect others via direct contact or medium (air, water, vectors etc.) | 3.Infection does not spread through direct contact nor by the medium. However, it may be hereditary i.e. from parents to offspring. |
| 4. Examples: Malaria, Dengue etc. | 4. Examples: Goitre, High Blood pressure, Diabetes |
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
The signs and symptoms of a disease will depend on the tissue or organ which the microbe targets Justify the statement with two examples. [SAll – 2014]
Classify the following diseases as infectious or non-infectious :
(a) AIDS (b) Tuberculosis
(c) Cholera (d) High blood pressure
(e) Heart disease (f) Pneumonia
(g) Cancer
What are the immunisation programmes available at the nearest health centre in your locality? Which of these diseases are the major health problems in your area ?
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
Under which of the following conditions are you most likely to fall sick ?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why ?
Under which of the following conditions is a person most likely to fall sick ?
(a) When she is recovering from malaria.
(b) When she has recovered from malaria and is taking care of someone suffering from
chickenpox.
(c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. Why ?
(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]
How many times did you fall ill in the last one year ? What were the illnesses ? (a) Think of one change you could make in your habits in order to avoid any/most of the above illnesses.
(b) Think of one change you would wish for in your surroundings in order to avoid any/most of the above illnesses.
(a) What is immunisation ?
(b) Define immunity and vaccination.
(c) Define vaccine. .
(d) What type of diseases can be prevented through vaccination ? [SAII -2013]
Give the modes of transmission of each of the following diseases :
(i) Syphilis (ii) Tuberculosis (iii) Jaundice (iv) Japanese encephalitis [SAII -2012]
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.