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This course provides an overview of hepatitis B, how it is spread, its symptoms and diagnoses, and its vaccination.

Over 40 percent of American adults have obesity, putting them at increased health risk for chronic diseases such as heart disease, Type 2 diabetes, high blood pressure, stroke and some forms of cancer. This course provides basic information about obesity.

This course explains how the human immune system works, how vaccinations work to ward off existing and emerging infectious diseases, and some of the great strides that are being made to detect, treat and prevent disorders of the immune system.

This course provides an overview of HIV, how it is spread, its symptoms and diagnoses, and its vaccination.