PHOENIX (KSAZ) - An illness that has killed three dogs and infected at least 50 is spreading in the Valley.
The illness is called leptospirosis and most of the cases have been in Scottsdale and Fountain Hills..
Leptospirosis is a bacterial infection and has symptoms similar to the flu. The illness is contagious and can be spread through water. Officials say there is a vaccine for leptospirosis, but it is in short supply.