Immunization Flashcards
How does a vaccine work
Contains specific antigens that trigger primary immune responses without the risk of infection
What are problems that can occur when trying to achieve hers immunity p
Poverty - no funding
Lack of nutrition - can cause danger
Parents not allowing kids to get vaccine for heir safety
How are vulnerable groups more protected with here immunity
Less chance of coming into contact with infected individual
What can stop her immunity threshold working
Type of disease- how fast it spreads
Effectiveness if vaccine -how well it protects
What groups of individuals are not suited for vaccines
Very old
Very young
Immune comprised
Explain why some individuals are not suitable for vaccines
The vulnerable groups could become unwell due to the vaccine
What is herd immunity
When a large part of the population of a area become immune to a specific disease
What is the purpose of vaccinations
Used to develope immunity to an infectious pathogen
Why are vaccines beneficial
Developes memory cells that will protect the body if exposed to the real antigen in the future
What is a adjuvant
Chemical substances that enhances the immune response making the vaccine more effective
What is a antigenic variation
Some pathogens can change their antigen quickly so that the memory cells against them become ineffective
What is mass vaccination programmes
When a country takes steps to achieve herd immunity against retain diseases by mass vaccination of the population
