Can vampires have babies

It has been well known since ancient times that a male vampire can father children with living women. The resulting child is known as a Dhampir and has certain heightened abilities and inclinations over the mortal child. These abilities are quite minor: heightened senses, a yen for blood etc. not at all the super-powers alluded to in modern fiction. In addition the Dhampir has the option of becoming a full vampire after his/her death without the intervention of a real vampire. Most such Dhampirs do not chose this option but make sure that they die in such a manner as to negate this possibility. Many Dhampirs in fact take up the profession of Vampire hunters such as Blade and Bloodrayven.

There are no 'ancient' accounts of a female vampire giving birth. All such allusions are of recent origin and are in all probability fictional.

Another Answer:

Vampires, other than vampire bats, which are real, are mythological creatures. As such, most people believe that they do not exist.