tzippi,
Without the vaccine references, there is nothing wrong with the original post. As I pointed out, Vitamin D, while not a replacement for vaccines, does offer some protection against influenza, at least in children (who are the most vulnerable to the H1N1 strain). All parents should talk to their family physician or pediatrician about appropriate doses for different ages.
We are blessed by HaShem that so many diseases that used to cause so much suffering may now be prevented by vaccines! It is a non-trivial matter to come up with a schedule that works *logistically* given the number of vaccines, the number of doses, and the number of clinic visits that already-pressed parents need to make. Fortunately all vaccines now available in the US are even more safe (in terms of frequency of serious adverse events) than common over the counter pain medications, so unless there is a known contraindication such as an egg allergy almost all vaccinations can be given with confidence on or close to the reccommended schedule.