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The number of annual cases of Lyme disease in the United States nearly doubled from 2004 to 2016 (and those are just the reported cases), but several other serious illnesses can be spread by ticks and mosquitoes.

Researchers testing the dispersal of bacteria in public restrooms found that the hand dryers were picking up bacterial deposits, likely from aerosolized microbes caused by the flushing of uncovered toilets.

This winter flu activity has been higher than usual across the United States. If you have not gotten a flu shot yet, it’s not too late; some protection is better than none, plus there are other steps you can take to protect yourself and those around you.

If you have not yet gotten a flu shot, the CDC has issued an advisory for this season that may make you reconsider. The severity of the virus is stronger this year, and while the vaccine may not be as effective as in years past, some protection is better than none.

If you are planning to get a flu shot but have not yet done so, it may be worth waiting a little longer, as data on patients from four recent flu seasons found that protection against the virus declined over the course of the winter.