After a record high flu level in December 2014, as measured by Gallup, reports of Americans having the flu declined in January, as the average of Americans who reported they "were sick with the flu yesterday" declined from 4 percent in December to 3.3 percent last month.
The January reports are on par with years past, as Januarys typically averaged 3.3 percent between 2009 and 2014. According to Gallup, this could mean the flu season has peaked already.
It is important to note that Gallup and the Centers for Disease Control and Prevention track the flu differently. Gallup does so through the Gallup-Healthways Well-Being Index survey, in which they conduct phone interviews each day of the month and ask adults if they had the flu "yesterday." The CDC tracks flu infections reported from physicians and hospitals.