Examlex
The ________ valve prevents backward flow into the left atrium.
Homeless Family
A family lacking permanent housing and may live on the streets, in shelters, or in temporary accommodations.
Social Isolation
A state where an individual lacks a sense of belonging, engagement with others, or a robust social network, leading to feelings of loneliness.
Herd Immunity
A form of indirect protection from infectious diseases that occurs when a large percentage of a population has become immune to an infection, thereby providing a measure of protection for individuals who are not immune.
Immunizations
The process or procedure by which individuals are made immune or resistant to an infectious disease, typically by the administration of a vaccine.
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