Question
How does vaccination prevent diseases?
✓
Answer
A vaccine contains a killed or weakened disease causing microbe that is responsible for infection. Because the germ is killed, it cannot make the person sick. When a person receives a vaccine, the body reacts by producing antibodies in defence. The antibodies remain in the blood for long and destroys the germs of a particular disease. In other words, vaccines expose people safely to germs so that they can fight with the same germs in future against its specific disease.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Fill in the missing .stages in the cycle.
How is a whale similar to a fish in adaption to life in water? Explain any two features
Name the disease in which the number of platelets reduces to 25,000 – 30,000 percubic mm of blood. State its major symptoms
Name the following : Causes of obesity
Answer in detail.
Liver does not secrete any enzymes yet it helps indigestion. How?
Liver does not secrete any enzymes yet it helps indigestion. How?
What is vegetative propagation? How does it take place in Bryophyllum.
Differentiate between the following:
Simple Leaf and compound leaf
Simple Leaf and compound leaf
List few precautions taken to maintain personal hygiene and cleanliness
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
You should sleep for at least seven to eight hours everyday.