Per that survey, CPS said about 14,000 of respondents, or roughly 30% of staff, had gotten at least one dose of the vaccine, with the district saying that the rate of response indicates that that figure is likely higher. District leaders said "supply issues" have been resolved and that they can now vaccinate all employees, with the understanding that CPS-run sites are not the only option, and staff can get vaccinated through a doctor, pharmacy or other available options as well. Vaccinations were a key issue in negotiations between CPS and the Chicago Teachers Union over returning to in-person learning in January and February.