Source: CDC mpx_demographics_supplemental_table.csv (https://www.cdc.gov/poxvirus/mpox/data/demographics/exported_files/mpx_demographics_supplemental_table.csv)
Monthly row for July 2023:
Month,White_%,Hispanic_or_Latino_%,African_American_or_Black_%
2023-07,39.8,30.5,16.1

Cumulative May 2022-Jul 2023 (computed from monthly counts, excluding missing race/ethnicity):
Category,Count,Percent_of_known
Black,9451,32.52%
Hispanic_or_Latino,9009,31.00%
White,8577,29.52%
Known_total,29058,100%