U.S. President Donald Trump's demand that Republican-led states redraw their congressional maps to help his party retain control of Congress in next year's midterm elections has triggered a national battle over redistricting.

The U.S. is in peak flu season, as the Centers for Disease Control (CDC) says "seasonal influenza activity remains elevated and continues to increase across the country." Case counts vary by state, however. Each week, the CDC releases a map of influenza ...