Featured This set of posts are always relevant, regardless of when I wrote them. Remembering the 3 Cs — Closed spaces, Crowded places, Close-contact settings — is key for understanding which scenarios carry increased risk. Can I catch COVID from smelling the roses? Stark differences in mortality by race are markers of stark inequalities by race. Would you explain to folks the statement, “There is no genetic basis for race”? Sensitivity is the ability of a diagnostic test to capture everyone who has the condition. Specificity is the ability to identify everyone who does not. What is sensitivity and specificity? “Herd immunity against COVID-19 will not be achieved at a population level in 2020, barring a public health catastrophe.”David Dowdy and Gypsyamber D’Souza, Epidemiologists What is herd immunity? Masks protect from virus, not from stink. Could farts be a helpful way to explain risk? Approximately 20 percent of death certificates list one cause of death and 45 percent have three or more causes. How are COVID deaths coded on death certificates? “The US response to the 1918 flu offers a case study of a communication strategy to avoid…The communication strategy of either reassurance or silence had its effect. Its effect was terror.” John Barry, author “The Great Influenza” What lessons can we take from the 1918 pandemic? Listen to the experts and not to this self-described “technologist.” A point-by-point response to Aaron Ginn’s post of 21 March