illnesses

Healthcare in Crisis: Focusing on Primary Healthcare and Public Health in the U.S.

Stephen Bezruchka

The science of public health has evolved since the 18th century, when it focused on isolating the ill and quarantining those exposed to diseases to prevent transmission of infection. In the 19th century, the focus was on sanitation, especially separating fecal contamination from food and water. Living conditions improved tremendously as a result. With the understanding of infectious disease transmission in the early part of the 20th century, the focus shifted to immunizations and infection control.

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