California , Hawaii and Mississippi are the only states without widespread activity . Comment: Officials do n't know whether flu cases have peaked this season . The number of flu-related deaths for children climbed by two to a total of 20 , officials say .
California , Hawaii and Mississippi are the only states without widespread activity . Other respiratory illnesses are also circulating , experts say . Officials do n't know whether flu cases have peaked this season . The number of flu-related deaths for children climbed by two to a total of 20 , officials say .