At least 15 cases of the COVID-19 Delta variant were identified in Chicago through Tuesday, city officials said. 

In all, 3,168 cases involving the variant, known as B.1.1.7, have been found in samples of COVID-19 positive tests from Illinois since Jan. 15, officials said.

In all, 2,069 cases involving the variant, known as B.1.1.7, have been found in samples of COVID-19 positive tests from Illinois since Jan. 15, officials said.

Since Jan. 15, nearly 1,300 cases involving the variant, known as B.1.1.7, have been found in samples of COVID-19 positive tests from Illinois, officials said. 

In all, 888 cases involving the variant, known as B.1.1.7, have been found in samples of COVID-19 positive tests from Illinois since Jan. 15, officials said. 

The spread of the U.K. variant is helping to fuel a surge in COVID-19 cases in Chicago and across Illinois, according to Dr. Allison Arwady, the commissioner of the Chicago Department of Public Health.

In all, 276 cases involving the United Kingdom variant have been found in samples of COVID-19 positive tests from Illinois since Jan. 15, officials said. 

Twenty-nine cases of a COVID-19 variant first discovered in Southern California and believed to be more transmissible have been discovered in Illinois, state health officials announced Thursday.

Twenty-five more cases of a COVID-19 variant first discovered in the United Kingdom that is believed to be more transmissible have been found in Illinois in the past seven days, according to data released Thursday by the Illinois Department of Public Health.

A variant of the coronavirus first discovered in Brazil and believed to be more transmissible is present in Chicago, officials announced Friday. The person who tested positive for the variant had not traveled outside Illinois, according to officials.

Twenty-seven more cases of a COVID-19 variant first discovered in the United Kingdom that is believed to be more transmissible have been discovered in Illinois in the past five days, according to data released Tuesday by the Illinois Department of Public Health.

No new cases of two COVID-19 variants believed to be more transmissible have been discovered in Illinois in the past seven days, according to data released Thursday by the Illinois Department of Public Health.

Twenty-two more cases of a COVID-19 variant first discovered in the United Kingdom that is believed to be more transmissible have been discovered in Illinois in the past seven days, according to data released Thursday by the Illinois Department of Public Health.

A variant of the coronavirus first discovered in South Africa and believed to be more transmissible is present in Illinois, state health officials announced Thursday.

The variant, known as B.1.1.7, was identified in samples of COVID-19 positive tests taken outside of Chicago and suburban Cook County for the first time, according to a spokesperson for the Illinois Department of Public Health.

Eight more cases of a COVID-19 variant first discovered in the United Kingdom and believed to be more transmissible have been discovered in Chicago and suburban Cook County, state health officials announced Monday.