Block 4

Created by

Loz

Cards (18)

Vaccination 
A treatment that helps the body build immunity to an infectious disease
Vaccination
Most vaccinations are given by injection, but some are given by mouth or as a nasal spray
Introduces a dead or weakened pathogen into the body in a vaccine
Allows the immune system to identify the pathogen and develop weapons to fight it
The weakened form of the pathogen can't multiply or cause disease
How vaccination works
1. B cells with matching antibodies bind to unique markers on the surface of the pathogen
2. After binding, the B cells produce antibodies and memory cells
3. The antibodies and memory cells are weapons that target the pathogen
Vaccination 
Helps the body build immunity in the same way as if it were infected – but without the symptoms of disease
Vaccines are rigorously tested to make sure that they are both safe and effective
Vaccines are only approved for use when they have passed a series of tests agreed upon by the scientific community
Vaccine 
A substance that contains dead or weakened pathogens
Vaccine 
Triggers B cells to produce antibodies and memory cells that remain in the body, allowing the immune system to quickly identify and fight the pathogen in any future infection
Vaccination 
Protects you by boosting your immunity to an infectious disease
When enough people are vaccinated
The disease can't spread
Herd immunity 
The protection vulnerable people get from their community
Even if a disease doesn't exist in your community, it can be brought in by a traveller
Vaccination rate
The percentage of people in a population who are vaccinated
Infection rate 
The percentage of unvaccinated people who end up being infected
When the vaccination rate is high enough
A disease can't spread through the community
When the vaccination rate is too low
An outbreak can spread
Those who are not vaccinated are at risk of being infected
When the vaccination rate is too low
There is no herd immunity to protect vulnerable people