DEERFIELD, Ill. — Flu activity across the United States is about four weeks ahead of recent seasons, Walgreens said Wednesday, when it launched its 2026-2027 Walgreens Flu Index.The interactive tool tracks flu, COVID-19 and other acute respiratory illness activity nationwide, providing state- and county-level data that Walgreens updates each Monday.
VIEW THE WALGREENS FLU INDEX
Early data from the index indicate that flu activity is rising acro…
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