Correlation is not (necessarily) causation
www.fredhutch.org › en › newsFeb 13, 2020 · Correlation is not (necessarily) causation Or, how we know herpes doesn’t cause cervical cancer — and HPV does February 13, 2020 • By Sabrina Richards / Fred Hutch News Service Untangling cause and effect from mere association can be difficult. Epidemiologists walk through how they assess the evidence. Getty Images