By CBS 2 Chicago Staff

CHICAGO (CBS) — By the end of this week, Chicago will have reached Mayor Lori Lightfoot’s goal of getting 77% of the city’s population at least partly vaccinated, more than a month earlier than she wanted.

In late September, Lightfoot said she wanted to get 77% of Chicagoans age 12 and older at least partially vaccinated by the end of the year.

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On Monday, she said the city is on track to surpass that goal by the end of the week. As of Monday, 76.7% of people age 12 and up are at least partially vaccinated, and nearly 70% are fully vaccinated.

However, some parts of the city are still lagging far behind, particularly in largely Black and Brown neighborhoods.

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Three of the city’s 60 zip codes have vaccination rates under 50%, and another nine zip codes have vaccination rates over 50% but still below 60%.

“Nobody’s taking a victory lap, and we are still seeing progress in some of those areas, particularly on the South Side, where we’ve been very challenged,” Lightfoot said.

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In the entire state, 71% of people 12 and older are fully vaccinated.

CBS 2 Chicago Staff