'''Viremia''' is the presence of a [[virus]] in the [[blood]].<ref>''Viremia'' [http://www.medterms.com/script/main/art.asp?articlekey=17664 MedicineNet] accessed June 23, 2007</ref> It may refer to:
−
'''Viremia''' is the presence of a [[virus]] in the [[blood]]. It may refer to:
*Primary viremia: the initial spread of the virus in the blood.
*Primary viremia: the initial spread of the virus in the blood.
−
*Secondary viremia: where the primary viremia has resulted in infection of additional tissues, in which the virus has replicated and once more entered the circulation.
+
*Secondary viremia: where the primary viremia has resulted in infection of additional tissues, in which the virus has replicated and once more entered the circulation.<ref>Racaneillo, ''Viral Pathogenesis: Frank Fenner and Mousepox Experiments'' [http://www.cumc.columbia.edu/dept/ps/2007/mid/mid31.pdf Columbia University Medical Center] accessed June 23, 2007</ref>