According to the official announcement from Niantic: "Pokémon originally discovered in the Hoenn region will take over wild encounters until February 13" Up 0 Down
Volbeat and Kangaskhan here. At least you have a reason to catch multiple of what you are infested with. I wish I had your problem... Up 0 Down
Same for us in Czech Republic. Flooded with Swablu. Gathered 400 candies in about 2 hours. :-) Up 0 Down