The US health secretary Robert F Kennedy Jr has got his work cut out for him. A cyclosporiasis outbreak linked to iceberg lettuce has the entire country playing salad roulette: one bad leaf and you could become very unwell. The condition isn’t normally deadly, but, on Monday, officials in Michigan confirmed the first two fatalities. Meanwhile, it’s the worst year for measles in the US since 1991. A disease that was once eliminated now looks as though it’s back with a vengeance – thanks in part, according to experts, to anti-vaxxers such as Kennedy himself. And this week New York officials are warning about a rare tick-borne illness called rabbit fever (tularemia).

Still, despite having rather a lot on his plate, Kennedy has found the........

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