A class action lawsuit has been filed in California against Yum! Brands, the fast food restaurant group that includes Pizza Hut, Taco Bell and Kentucky Fried Chicken. Chinese media reported on Nov. 23, 2012 that chickens sold to KFC had been treated with illegal antibiotics and other drugs. On January 7, 2013, Yum Brands! filed with the SEC to lower its China division’s full-year guidance for same-store sales, causing Yum! Brands’ stock to drop by five percent. The lawsuit alleges that: