Hi,

I think that childcare centre needs to have a good hard look at it's occ health and safety regulations.
Actually, babies are more at risk of having their formula heated in a microwave. Microwaving changes the molecular structure of foods - and we don't even know all the ways that it is changed. It causes hot spots in foods - v. dangerous for bottlefeeding. In breastmilk it kilss some of the immune factors. But, for a breastfed baby it is likely that they will only get the occasional bottle of microwaved EBM. Not good, but consider that formula fed babies often have their ENTIRE diet for the first 6mnths of microwaved formula. That's a real risk. Warming in a bottle warmer takes no time really.
Warm Regards
Barb