0
0
Read Time:23 Second
At least 68 infectious diseases are seasonal, according to a 2018 paper by Micaela Martinez of Columbia University. But they’re not in sync, and seasonality varies by location. In this graphic, based on U.S. federal and state health records, each bubble represents the percentage of annual cases that occurred in each month. (The data are old because many diseases declined—in some cases to zero—after the introduction of vaccines.)