Hepatitis B viruses spread through contact with the blood from a sick person, drug injecting, tattooing, piercing, use of everyday items contaminated with blood (toothbrushes, shaving accessories), donor blood, sex with a person suspected of having hepatitis, and from mother infected with hepatitis to a foetus/newborn.
B hepatiidi viirused levivad haige inimese verega kokkupuutumisel, narkootikumide süstimisel, tätoveerimisel, augustamisel, verega saastunud olmeesemete (hambaharjad, raseerimisvahendid) kasutamisel, doonoriverega, hepatiidikahtlase isikuga seksimisel ning hepatiidihaigelt emalt lootele/vastsündinule.