Arizona does better than the national average in terms of residents who report smoke-free homes and vehicles.

The federal Centers for Disease Control and Prevention said cases of Valley Fever in Arizona and some other Southwestern states rose dramatically between 1998 and 2011.

Shoana Anderson of the Arizona Department of Health Services explains how the state's flu season compares with the rest of the country. James Hodge of Arizona State University's O'Connor College of Law considers the ethics of requiring workers to be vaccinated and sending them home if they're ill.

Cases of pertussis -- also known as whooping cough -- have spiked in Arizona this year. The Arizona Department of Health Services says as of December 15, the state’s seen 913 reported cases of pertussis and one death. 

Arizona Department of Health Services director Will Humble explains how conditions become eligible to be treated by medical marijuana and gives a rough timeline for the opening of dispensaries.