Suppose that a vaccine is developed for a highly contagious strain of flu.The likelihood that anyone will get this flu decreases as more people receive the vaccine.One of the demand curves in the diagram reflects private benefits and the other reflects social benefits. 
Refer to the figure above.Private benefits are measured by ______,and social benefits are measured by _____.
Definitions:
Political Citizenship
Political citizenship refers to the rights and duties of citizens in a political system, including participation in elections, access to government services, and the ability to exercise civil liberties.
Social Citizenship
The rights and duties of citizens which pertain to their social welfare and participation in the social life of the community, beyond merely legal or civil aspects.
Social Movements
Social movements are organized collective efforts by groups of people to bring about or resist social, political, or economic changes within a society.
Increasingly Violent
Describes a situation or trend where the frequency or intensity of violence is growing over time.
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