Answer:
The CDC publishes a weekly influenza surveillance report for the US called FluView that gives influenza-like illness statistics with some information from the US laboratories about results of testing they have done that gives a rough idea of the numbers of H1N1/09 still being found in positive lab tests. It also provides information on all current flu illness of any type and flu-related deaths in the US.
You can also find the CDC International Report of influenza world-wide at the second link in the related links section below.
See the links below for these CDC influenza surveillance reports.