Harry is doing well and he should continue to do well because we won't be molly-coddling him to protect him from his natural environment, read this:
This is something I've been saying for about fifteen years and have had lots of discussions about with school staff around the country. Asthma, anaphylaxis, skin problems, etc. are all, more than likely (but not always), attributable to our lack of respect for dirt and the fact that we live in a dirty world, not a clean one, so trying to scrub the planet into sterility is killing mankind.
There are individuals out there who will justify their obsession with cleanliness by citing the various germs that are around and how dangerous they can be, especially to our children but the point they miss is that those germs have always existed in, around and on our bodies and not always to the detriment of our survival - maybe keeping your child away from them when they are developing an immune response from age zero is not the wisest way of dealing with the issue.
This scientific debate will probably not result in the total reversal of narrow-minded stupidity and unfounded fear but it may help those of us who have always seen the logic of this to understand that we can continue with a common sense approach to our 'dirty earth'.