Módulo 7 de 18 · Texto
Sem título
How can vaccine programmes be made more effective?
* If a large proportion of the population is vaccinated i.e. a large percentage of
people have been given the vaccine and so are immune.
* This is because it reduces the spread of the pathogen. (Do not talk about the
spread of disease, only the spread of what causes the disease e.g. pathogens)