This is true.
Blood pathogens are microbes that can cause infections and It is found and spread by means of blood in humans. Among the most common pathogens are Hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV).
There is no effective treatment for the elimination of these pathogens, but there are treatments to reduce the negative effects of pathogens.
I hope this information can help you.