Is xintai city CDC and the public health department the same department?

Don't belong.

According to Xintai government network, xintai city CDC is an independent institution, responsible for disease prevention and control, health supervision and health education. Xintai city Public Health Department is the internal organization of xintai city Health Bureau, which is responsible for public health management and emergency handling of public health emergencies. Therefore, xintai city CDC and the public health department do not belong to the same department.

The organizational structure of different regions may be slightly different, so you need to ask the relevant local departments for details.