If you Google for an answer you'll probably find dozens of different ones. Here's the 'official' information, provided by NaTHNaC (which is funded by the government's Department of Health): http://www.nathnac.org/ds/c_pages/country_page _EG.htm
I was there last year and didn't need any. You should be okay unless you're going to live with mad dogs in the desert. Watch out for salads, stick to bottled water.
Jno's right - and there are no vaccinations you can get to prevent the trots.
If you are going to a resort, they gas all the wildlife every evening - really - so you should not be troubled by mosquities.