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Message: <blockquote data-quote="Umbran" data-source="post: 7945303" data-attributes="member: 177">R0 is a broad statistical measure of how many others a carrier will infect in a population, overall.  It does not really speak to, "what is my chance of catching (and thus spreading) during a specific trip to a grocery store".The graph shown by HarbingerX is nice, though it doesn't adjust for local variation - it is also broad, over the population.  You don't expect it to be a good estimate for people living in a hotspot.  And even then, it gives you the odds of a carrier being present, not about what it takes for you to pick it up.People need to eat.  Folks will have to shop when they need to shop. For the most part, their timing will be based more on their needs - they won't have much option to choose unless they were far ahead of the game.  When you are out of essentials, you are going shopping.  Sitting home malnourished will not reduce risk of transmission, after allGiven that shopping has to happen, I would imagine that exactly what portion of the epidemic you go in is less important than whether you can minimize your exposure when you do go - if you are standing for 20 minutes in a crown at checkout, that's bad.  If you are in and out swiftly, that's better.</blockquote>