Health communication focuses upon communication and marketing strategies that help to inform and influence decisions that impact health. Communication resource directories provide an organized compilation of information and marketing resources focusing upon various health topics. Utilizing resources such as the Marketing Collateral Database is extremely valuable, and public health organizations can save time by having materials stored in a central location contributing to time and additional costs savings, as a traditional media ad can costs upwards of $20,000 to $100,000 or more to produce and market, while repurposing an ad available through the Marketing Collateral Database or similar resources can cost as little as $300.