Keeping track of the flu

From a friend who's a public health professional:

If you are not already signed up with Flu Near You, please consider it. Each week they send you an email where you check off any symptoms of flu you had in the previous week. It takes only a few clicks, and you can view the incidence and location of symptoms in your area. This way they will have real-time information about flu epidemics.

Go to https://flunearyou.org/ to register.