Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

CBSE - IX - Biology - Why Do We Fall Ill?

an infant was taken to thedoctor and a card of the schedule of immunisation was issued to him . why is he being vaccinated?name any three diseases for which he is being vaccinated.

Asked by Nikhil 10th March 2015, 4:07 PM
Answered by Expert


Infants are particularly vulnerable to infectious diseases. Therefore, it is important to protect them through immunisation. Immunization helps to prevent the spread of diseases and protects infants and toddlers against dangerous complications.

Artificially acquired active immunity occurs through the injection of the causative agent into the person’s system through immunization. The causative agent is diluted to reduce its virulence so that the recipient will form antibodies without any effect on the body.

Important vaccines for infants and children:




BCG vaccine


At birth

Triple/DPT vaccine

Diphtheria, Whooping cough, Tetanus

Age of six weeks to nine months

Polio vaccine


Age of six weeks to nine months

Measles vaccine


Between 9 months to 1 year

Typhoid vaccine


Age of 5 to 6 years

Tetanus toxoid


Age of ten years

Smallpox vaccine


Age of ten years

Hepatitis-B vaccine


Infants, children and adults

Answered by Expert 10th March 2015, 5:21 PM

Rate this answer

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Your answer has been posted successfully!