How does the team at Columbia University's flu-tracking tool work? A. The tool uses flu data from previous years and mathematical
formulas to track, and even predict, the spread of influenza like
illnesses.
B. The tool shows the graphic spread of influenza in the United
States during a week's time to show how quickly the flu is
spreading
C. The tool uses social media tracking to see how quickly the flu is
spreading during a month's time and assess its serverity.
D. The tool uses personal information manager applications to keep
track of the people diagnosed with influenze like illnesses.