Name some infectious diseases against which vaccines are available

CBSE Class 9 CBSE Class 9 Science
1
  1. Under which of the following conditions, a person is most likely to fall sick? Give reason for your opinion.
    • When he/she is recovering from malaria.
    • When he/she has recovered from malaria and is taking care of someone suffering from chicken pox.
    • When he/she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chicken pox.
  2. Name some infectious diseases against which vaccines are available.
2
  1. Reason
    After recovering from malaria, the person is on a four-day fast. This fasting weakens the body’s immune system and he/she is likely to get chicken pox, as it is a contagious disease which spreads through direct contact with the patient.
  2. Some infectious diseases against which vaccines are available are as follows
    (a) Tetanus
    (b) Diphtheria
    (a) Whooping cough
    (d) Measles
    (e) Polio
    (f) Chicken pox