Agree with insancerre and HSMMaCM.
I have a little experiance, having 2 of my own, in their teens now, worked as a childminder, still do for after schoolers and being a pre school practitioner.
Virus and bugs, your going to be dealing with them in one way or another for a couple or so more years yet, children of this age are still developing their immune system.
We have quite a few few younger siblings from the school next door.
In the last few weeks, we've had a a rather nasty vomiting bug, scarlet fever and a case if mumps in a yr1 child, who has been vaccinated,
oh and the normal head lice..
Please dont get me on to the subject of parents who dose their pre schoolers up on calpol, then wonder why they get a call 11am ish onwards, to come get their child, as their child is really not well enough to be there!!
(It really is not day care/pre school/childminder/school who is making the child ill, its other parents.. now theres a thought!!
And yes, we get that some parents work, however if your child is ill, they need to be at home....and as per most of my collegues (private pre school & MY t&cs as a CM, we dont get paid if we're off work ill..)
As for toilet training, thats down to you.
School holiday are good for this particularly the longer Spring/Summer one's.
However if there are any extenuating conditions, you need to talk to the Manager & Key worker imo and get a care plan put into action.
Its good to talk I think the saying goes, and then an email/letter covering what was spoken about.
Sorry thats quite an essay, might seem harsh, however both subjects a bug bear of mine, and my own opinion, for what its worth.