Hi S.,
I definitely reccomend a home based daycare for an infant. Although there are a lot of good daycare centers there are also some questionable ones. The thing I liked about using a home based daycare was the flexibility and also the fact that there were less children. My hcild was able to learn social skills but in a smaller environment. He was still exposed to germs etc, but nt as many as in a daycare center.
So I would suggest checking out your local Greensheet and going to meet and observe the daycares you call about. Look for cleanliness and no foul smells, as well as attentiveness of the care giver. There should be a separate room where the children nap. Also ask for their license information and references!!
I went through 3 home daycares before my son was 18 mos. Because of moving etc. So don't be afraid to switch! As far as daycare centers we have been through a few of those too! A few were good, and a few were bad!
Good luck!