NEW : As many as 149 cases of swine flu confirmed by health officials worldwide . Mexico urges travelers to avoid nonessential travel to Mexico . They include fever , lethargy , lack of appetite , coughing , runny nose , sore throat , nausea , vomiting and diarrhea . Mexico health official : Eighty-two deaths may be from swine flu . U.S. closes all schools until 16 years .
NEW : As many as 149 cases of swine flu confirmed by health officials worldwide . Mexico urges travelers to avoid nonessential travel to Mexico . Mexico health official : Eighty-two deaths may be from swine flu . U.S. closes all schools until 16 years .