What is the curve?
The “curve” researchers are talking about refers to the projected number of people who will contract COVID-19 over a period of time. (To be clear, this is not a hard prediction of how many people will definitely be infected, but a theoretical number that’s used to model the virus’ spread.) Here’s what one looks like:
The curve takes on different shapes, depending on the virus’s infection rate. It could be a steep curve, in which the virus spreads exponentially (that is, case counts keep doubling at a consistent rate), and the total number of cases skyrockets to its peak within a few weeks. Infection curves with a steep rise also have a steep fall; after the virus infects pretty much everyone who can be infected, case numbers begin to drop…
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