speaking from experiences, my daughter do felt de same. during 1st 3-4month in nursery, 2-3days sick every week, EVERY WEEK for 3-4month.

So ussually saturday sunday at home getting better and no sick. Start monday -ok, tuesday symptom came.

Doctor believe baby are adopting to bacteria in their environment. Should be ok after day, after baby naturally develop immunity. As for now, almost 2yo, she's fine with nursery env.

**p/s, didnt used any supplement/pribiotic,or antibiotic since doctor suggest below 2yo age prefer no medication accept for mom's milk. only few time cannot tahan kesian my baby gave her flu nose injection(given from doctor for toddler)