The Returned
It's not a series like you are looking for, it's a British movie. It's available on netflix if you have that. The premise is a post zombie outbreak. Many casualties occurred however civilization was preserved and a treatment was found. Anyone infected could take the treatment and come back to being a human. The problem is that they need to keep taking the treatment on a regular basis or they will revert to a zombie. There aren't too many zombies in this movie, it moreso tackles the world they live in. Predictably the political climate is quite split on how to treat this population. Well worth a watch I highly recommend it. A different kind of zombie movie definitely.