Centra Care is horrible! We spent hours there as our baby was very ill. We didn't realize that WDW used it for their employees, so needless to say, we waited a long time with a very sick infant, as they were seeing patients with regular appointments. They did a swab to confirm strep, but missed out on several other illnesses, so 2 days later, with an even sicker baby, we went to Orlando Regional Hospital Sand Lake at 9400 Turkey Lake Rd., which has now been renamed the Dr. P. Phillips hospital, just a few minutes from Downtown Disney. Our baby was so ill, they ambulanced us right away to Arnold Palmer Children's Hospital. They were not impressed with the fact that Centra Care didn't find the other illnesses. We spent 2 days in isolation in our resort room, so they were pretty sure that based on incubation and symptoms, she had these illnesses at Centra Care. Doc told us it was fine to go to parks, despite the fact that she was highly contagious with strep - that's how she caught it in the first place, other sick kids at the parks! Needless to say, we didn't follow his advice at all. Also, the pharmacy that is connected to Centra Care is very expensive.
Anyway, we do not recommend Centra Care clinic to anyone - by the way, Centra Care and Celebration are owned by the same people (they just opened the new Disney hospital), but I've heard much better things about the hospital than the clinic, so go to hospital emerg and you will be much better served.
Happy health to your family, Tiger