To encourage people to get vaccinated to protect the more vulnerable to encourage men is best describes the purpose for this poster shows a flu vaccination campaign from the centres of disease control.
What is vaccination campaign?
Vaccination campaigns are a method of rapidly reaching a large number of children/individuals with one or more vaccines.
Depending on the country's needs and objectives, they can be conducted at the national or sub-national level, single antigen or integrated.
Thus, option B is correct.
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