The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike upward in most states, according to the Centers for Disease Control and Prevention (CDC).

There have been at least 24 million illnesses, 310,000 hospitalizations and 13,000 deaths from flu so far this season, according to the CDC. The agency said in its weekly flu surveillance report that seasonal influenza activity continues to increase across the country.

So far this season, the CDC estimates, there have been 13,000 flu deaths — including at least 57 children. The flu has forced schools to shut down in some states.

The Centers for Disease Control and Prevention lists Illinois in the high category for flu cases, and across the Chicago area, emergency department visits, hospital admissions, and ICU admissions for the flu are currently higher than the peak of last season.

The order affects roughly 80 markets in New York City and in several nearby counties. New Jersey is also asking its live markets to voluntarily clean, disinfect and temporarily close.

Multiple cases of bird flu in chickens are forcing the closure of live poultry markets in parts of New York state, Gov. Kathy Hochul, D-N.Y., announced Friday.

The order also temporarily shuts down all bird markets in Westchester, Nassau and Suffolk counties after 7 cases were detected in NYC poultry.