The closest audience match for the Centers for Disease Control and Prevention is NIH at 0.96 — but the top 10 neighbors span a notably wide range of subcategories, with no single type dominating.

The shape is flat: the top 10 scores run from 0.96 down to 0.93, a narrow band with no standout peak. The mix includes NIH (Research Organizations, 0.96), Sanjay Gupta (TV Personalities, 0.95), Joe Biden (Politicians, 0.94), CDC Director (Government Officials, 0.94), and American Medical Association (Non-Profit, 0.94). Rounding out the ten are U.S. Surgeon General (Government, 0.94), Zappos.com (Footwear, 0.93), Moms Demand Action (Activism, 0.93), World Health Organization (Non-Profit, 0.93), and Kai Ryssdal (Journalists, 0.93). The subcategory composition is genuinely mixed: health-adjacent institutions, a politician, a TV personality, a journalist, an activist organization, and a footwear retailer all land within the same narrow similarity band. Only one neighbor — U.S. Surgeon General — shares the CDC's own Government subcategory in the top 10. The cross-kind breadth here, particularly the presence of Zappos.com at 0.93, signals that this audience's shape is not defined by institutional type or topic alone.

The flat distribution across such a diverse neighbor set suggests an audience that follows a wide range of civic, media, and professional entities with comparable intensity.