When someone drinks blood does it go to there circulatory system and infect your stream or not?

When someone drinks blood, it does not go directly into their circulatory system and infect their bloodstream. Instead, the blood is first broken down in the digestive system, just like any other food or beverage. The stomach acid and enzymes in the digestive tract destroy the blood cells and other components, so they cannot enter the bloodstream intact.

However, if someone drinks infected blood or shares needles with someone who is infected with a blood-borne disease like HIV, hepatitis B or hepatitis C, the virus can enter the bloodstream through the mucosal membranes of the mouth or cuts or abrasions in the digestive tract. Blood-borne diseases are primarily spread through contact with infected blood or bodily fluids, rather than through drinking blood alone.