My boys have been in group day care since they were 3 months old. In the last two years, we’ve seen more than our fair share of illnesses. The first few times they were sick, we did everything we could to avoid cross-contamination. This resulted in one kid getting sick just as the other one was getting better. Since both my husband and I work outside the home, this meant a lot of vacation days gone caring for sick kids, not to mention a lot less sleep! We decided for non-serious illnesses we would encourage cross-contamination as much as possible by letting them share pacifiers, sippy cups, etc. (Obviously with babies, we did not do this with illnesses such as high fevers or vomiting.)
This plan worked well for us, as the boys got sick around the same time. After the first year of day care, we noticed the boys had… gasp… actually built up an immune system and were successfully fighting off illnesses. One time Nate got sick with a vomiting virus that Alex never caught, despite incidental cross-contamination. At that point, we switched tactics and decided to avoid cross-contamination where possible. It’s easier to do this at age 2 as they no longer use pacifiers or chew on everything in sight.
But I often wonder what other families with multiples do… do you encourage sharing of illnesses or do you keep them separated? What has worked for your family?