Kentucky Department of Public Health says in a statement this provider Vaccination Hire had been vaccinating in companies in Kentucky, Ohio and Indiana since September 1, 2018, before several incidents are reported.
Several people have developed vaccine-associated infections, including people with "redness, pain or sensitivity to touch, swelling and development of hard nodules at the injection site," according to the agency.
Kentucky DPH believes that the side effects of vaccines are due to "inappropriate storage and handling of the vaccine".
"We want to point out that there is no evidence to suggest the existence of a vaccine supply problem," said DPH Commissioner Jeff Howard. said in a statement. "The provider has stopped vaccinating and there is no permanent risk to the public."
Health officials said that although the company has stopped administering vaccines, it is still possible for previously vaccinated people to develop an infection. Symptoms may begin a few days to more than 12 weeks after vaccination.
"Medical care is advised because the infections are unlikely to be alleviated on their own," the agency said.
Most vaccines have been administered in companies in central Kentucky, but officials said that Vaccination Rentals was providing services in Indiana and Ohio.
The agency said that vaccines could not only have been associated with infections, but also have been ineffective in preventing disease. The agency encourages people with infections associated with vaccination to consider getting another tour to ensure full immunization.
"It's important that people vaccinated by this company seek appropriate medical assessment and treatment," Howard said.
Health officials urge people to get vaccinated to protect against hepatitis A, seasonal flu and all vaccine-preventable diseases.
Associated Press contributed to this report.