(January 22, 2016, 2:31 PM EST) -- LOS ANGELES — Six students and a cheerleading coach on Jan. 20 filed an amended class action complaint in California federal court against Chipotle Mexican Grill Inc., claiming that they became sick after eating at the chain’s Simi Valley restaurant where a sick kitchen manager was preparing food and that the restaurant tried to cover up its link to an outbreak of norovirus (H.C.L., a minor, by and through his guardian ad litem Richard R. LeSecla, Jr., et al. v. Chipotle Mexican Grill, Inc. No. 2: 16cv399. Calif. M.D.)....