Vaccinations

How vaccines work?

1. A vaccination is a dead or inactive pathogen.
2. Vaccination is injected.
3. The pathogen is detected and white blood cells start producing specific antibodies to kill that particular pathogen.
4. White blood cells remember the pathogen.
5. When live pathogen enters the body, white blood cells recognise the pathogen and produce antibodies.
6. The pathogen is removed before it can develop any symptoms.

MMR vaccine
MMR vaccine is injected to children to protect them against measles,mumps and rubella.

Advantages

• Epidemics can be prevented as there are fewer number of people who can pass the disease on.
• By having vaccinations, we can control diseases.

Disadvantages

• Some people can react badly to the vaccination.
• Vaccines don't always work.