Massive health risks if it's one degree warmer outside?

Let's say you live in a town in the northern U.S. or Canada.

Let's say you know of people who've actually left the safe, frigid north for the hellfires of Orlando or San Diego.

Have you ever noticed that these people never return, having succumbed to some combination of floods, fires, malaria, dengue fever, yellow fever, schistosomiasis, leishmaniasis, salmonella, diarrhea, scabies, Lyme disease, etc etc etc?

Well, the good people at the Washington Post have noticed, and they've helpfully provided this graphic of the horrible risks.