I did home daycare until my daughter was 18 mos to keep her from getting sick and we got sick maybe once every 3-4 months. Not bad. BUT, the sitter had to return to full time work and I needed more flexibility with hours and the reliability of daycare since I took a job that requires me to travel.
The first two months of daycare, my kid was sick the entire time, really because she hadn't been exposed to a lot before. But we took a week vacation and she was well until we took her back to school. This set my mom radar off.
We are at a new school that we have been at since the beginning of July. My daughter has not been sick at all other than a minor cold until this week when every kid there started getting stomach bugs. My mom and niece up in Plano also have this too so I don't blame the daycare for this, when stuff is going around, it goes around.
Sooo...there are pro's and cons to private and daycare. Private care, the hours are shorter and you get put in a bind if you do not have a backup plan in case sitter is sick or quits for some reason. Pros are that your child gets individualized attention if the caregiver has a small ratio. Daycare-there's germs but your kid shouldn't just get sick and stay sick if theyve never been like that before. Pros are that your child gets to socialize with a diverse group of children, you have wider hours and someone is going to be there to watch your kiddo, even if the regular teacher is out.
BTW, we do the kids Vitamin C 250 mg tabs from Whole Foods and when she appears to be coming down with stuff, I give her a dose of kids echinacea-goldenROOT from Whole Foods also and it really seems to help, at least, with the respiratory stuff.
Hope this helps, if you have more questions about this or want to chat more, PM me. Good luck!