There are normally no vaccinations needed when going to Morocco. But there can be dagner of exposure to typhus, cholera, tetanus, and polio, but Morocco is not hard struck by this. Malaria can be a problem in the south during the summer, but the vaccination against this is infamously unpleasant. Schistosoma (bilharzia) is present in some rivers and pools, but the chance is that you don't get infected. Most locals will be able to tell you about any dangers, if you plan to go swimming.