Preventing the Evil Dead from Arising, Ancient Practices Alive in Present-Day Romania Part 2
As shown in numerous existing Romanian legends and testimonies, the main measure of protection against strigoi (vampires) is respecting funeral rites in detail. (The majority of strigoi appear as a result of incorrect funeral rites.) In this way, arranging burials correctly is the main preventive measure so that a deceased person can be stopped from turning into a strigoi. The dead, satisfied with the way and place of burial, will have no reason to rise from the grave.
Source: ancient-origins.net