VACCINATION

Question 1

what are vaccines

Answer 1

contain one or more antigens from a pathogen to stimulate the immune response of an individual
shouldnt cause symptoms

Question 2

what do vaccines contain

Answer 2

weakened toxins by bacterial pathogens
weakened / inactive viruses
subunits

Question 3

a successful vaccine should..

Answer 3

have few side effects
be suited to store and transport without being damaged
be economical
be able to be administered properly by having qualified staff available
produce herd immunity

Question 4

what is herd immunity

Answer 4

form of immunity that occurs when the vaccination of a large group of the population provides a measure of protection for individuals who have not been immunised

Question 5

positives of herd immunity

Answer 5

stops the spread of disease
effective as it is never possible top vaccinate 100% of the population

Question 6

negative effects of herd immunity

Answer 6

to be effective , vaccines should be carried out in a single time period
when immunisation decreases, herd immunity can fail leading to a rise in new cases