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HIV and the Global Sex Tally

Every year 2.5 million people are newly infected with HIV. This figure is simultaneously catastrophic and hard to understand, but the silver lining in that viral cloud is that we can use it to calculate how much sex people are having.

To find out how, read my full article at the Scientific American.

Posted on October 12, 2013 by Tim Lahey and tagged HIV sex epidemiology.

Tim Lahey, MD MMScAn HIV doc and clinical ethicist, I write about medicine, ethics, and HIV here and in The Atlantic, Scientific American, TheBody.com, Health Affairs blog, The Conversation and The New York Times. — **Tim Lahey, MD MMSc**

An HIV doc and clinical ethicist, I write about medicine, ethics, and HIV here and in *The Atlantic*, *Scientific American*, *TheBody.com*, *Health Affairs* blog, *The Conversation* and *The New York Times*.