Incidentally, most nausea-inducing microbes need time to proliferate inside you before they make you sick. A few, like Staphylococcus aureus, can make you ill in as little as an hour, but most take at least twenty-four hours. As Dr Deborah Fisher of Duke University told the New York Times, ‘People tend to blame the last thing they ate, but it’s probably the thing before the last thing they ate.’8 Actually, many infestations take far longer than that to manifest. Listeriosis, which kills about three hundred people a year in America, can take up to seventy days to show symptoms, which makes
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