Each US city has its own distinct pattern of flu spread

NEW YORK  (CNN) — High-population cities have longer-lasting flu seasons, while lower-population cities have shorter but more intense seasons, new research suggests. But don’t assume you’re safe if you live in a smaller city.
Individual US cities show distinct patterns of flu transmission, with differences due to climate, population size and where people live and work, the study published Thursday in the journal Science indicates.
“In some cities, flu cases are consi