Name some diseases that spread through air. Explain how they spread.
Common cold, pneumonias and tuberculosis can spread through air. These are infectious diseases and spread by the means of little aerosol droplets thrown out by an infected person during sneezing or coughing. The microbes in these droplets enter a healthy person and infects them.
What is vectors?
Which of the following physical contact can spread AIDS?
handshake, hugs, wrestling.
How does diseases spread through water?
Match the following :
|
Column A |
Column B |
|
(i) Tuberculosis |
liver |
|
(ii) Jaundice |
gut lining |
|
(iii) Typhoid |
lungs. |
