Data reported by the Texas Medical Center showed that African Americans make up a majority of the coronavirus deaths being reported in Houston.

According to TMC officials, Wednesday marked the first day that race and ethnicity were included in the demographics being reported for fatal cases of COVID-19 by the Houston Health Department.

On Wednesday, the city had reported 12 deaths because of the virus. According to TMC officials, eight were black, two were Hispanic and two were Anglo.

All 12 people suffered from underlying health issues such as diabetes and hypertension, TMC officials reported, citing Houston Mayor Sylvester Turner.

According to TMC officials, African Americans make up about 23% of Houston’s population but comprise about 66% of the city’s coronavirus deaths, so far.

On Saturday, Harris County health officials released a report of confirmed COVID-19 case counts by zip code, providing the most specific account to date of local infection numbers.

The three zip codes with the highest numbers of cases are 77088, 77084 and 77449 – Acres Homes, parts of the Energy Corridor, and a section of Katy east of the Grand Parkway and north of Interstate 10, respectively.

Those zip codes have between 61 and 90 cases of the coronavirus, although the numbers haven’t been made more precise than that.