Vaccinations Flashcards
What do vaccines protect from?
Future infections
What is injected into your blood stream in a vaccine?
A small amount of a dead or inactive pathogen
What happens when the pathogen is injected into the blood stream?
The ANTGENS it carries will cause the body’s white blood cells to produce ANTIBODIES to attack them
What pathogens does the MMR vaccine contain?
- Measles
- Mumps
- Rubella
If the body comes into contact with a stronger version of a pathogen AFTER being vaccinated against it, what happens?
The body’s white blood cells recognise it and can rapidly mass-produce antibodies to kill of the pathogen
What happens to some vaccines over time, and what has to be done as a result?
Some ‘wear off’ over time
Booster injections are given to increase levels of antibodies
As having a whole range of vaccinations is pretty much standard now, what is much less likely to happen?
Children catching the kind of diseases they might have done in the past
What are the 2 pros of vaccinations?
- They have helped control lots of and even eradicate some diseases that were once common in the UK
- Epidemics can be prevented if a large percentage of the population is vaccinated
Name 6 diseases, once common in the UK, that vaccines have helped control
- Polio
- Measles
- Whooping cough
- Rubella
- Mumps
- Tetanus
Which disease no longer occurs because of immunisation though vaccination?
Smallpox
What percentage have polio infections fallen by?
99%
Explain how vaccinating a large percentage of the population prevents epidemics
Even the people who aren’t vaccinated are unlikely to catch the disease because there are fewer people able to pass it on.
If a significant number of people aren’t vaccinated, then what can happen?
The disease can spread QUICKLY through them and lots of people will be ILL at the same time
What are the 2 ‘cons’ of vaccines?
- Sometimes they don’t work and don’t give you immunity
2. SOMETIMES you can have a bad reaction to a vaccine
How likely is it for someone to have a bad reaction to a vaccine?
Rare