Actually, it's more like seven vaccines (or eight, if the Hep B is given at two months) given in a variety of combinations. DTaP (diptheria, tetanus, acelluar pertussis) is three vaccines in one dose. Trust your instincts, mamas! Read everything you can get your hands on and know that you can *always* decide to do it later. I vaccinated against my instincts with my first and I regret it.