This section provides details and graphs that demonstrate flu activity gathered by both clinical laboratories and public health laboratories in the United States.
The clinical laboratory section provides updates on percent positive flu test results of specimens tested on a weekly and annual basis. This section helps us understand the percentage of positives and how it compares to the current season, which can indicate a general rise or fall in prevalence.
The public health section presents data collected from public health labs, characterizing the strands of seasonal flu currently circulating in the US. This section provides context into what strand is circulating, which can be helpful in potential projections depending on time in season. For instance, Flu A has been tied to pandemics and can circulate in both animals and humans while Flu B in generally considered to have more mild symptoms and can only circulate in humans.1