The Centers for Disease Control and Prevention on Friday reported cases were widespread in 29 states last week. If the trend continues, it could bring another early peak to the flu season as happened in the last two winters.
Experts worry this will be a bad season because the dominant strain — seen in roughly two-thirds of recent tests — is a nasty bug not covered in this year's vaccine. But officials have not seen an unusually high number of hospitalizations or deaths so far.
Flu season traditionally peaks around February. But in the last two winters, flu peaked by early January.
CDC flu update: http://www.cdc.gov/flu/weekly/