Hepatitis C virus (HCV) is a hepatotropic and lymphotropic virus with the capabilities of tumorigenesis. We present an HCV-infected patient affected with B-cell lymphomas after suffering from hepatocellular carcinoma. The patient exhibited curative effects for lymphomas after treatment with sofosbuvir and ledipasvir, which is shown clearly with a positron emission tomography scanner.

Human T-cell lymphotropic viruses types 1 and 2 are probably among the most neglected blood-borne pathogens that have experienced significant changes in their epidemiology since discovery, which could be attributed to globalization and intravenous drug use practices as well as enhanced screening recommendations; however, systematic prevalence studies, especially in high-risk populations in Nort...

A new DNA polymerase and DNase activity were identified from cells infected with human B-lymphotropic herpesvirus (HBLV). DNA polymerase associated with HBLV infection was similar in its sensitivity to inhibition by ppi analogs as other herpesvirus-specific DNA polymerases but was dissimilar in its inhibition by certain nucleoside triphosphates.

Epstein-Barr virus, a B-lymphotropic human herpesvirus, persists in vivo by entering the long-lived memory B-cell compartment. Work with genetically modified mice suggests that the viral latent membrane protein LMP1 might allow infected B cells to access the memory compartment by an unusual route.

The prevalence of infection with human T-cell lymphotropic virus type 1 (HTLV-1) in blood donors from Israel is 1 infection/100,000 persons. In donors originating from Eastern Europe, the Middle East, and Latin America, prevalences are 7.7, 14.6, and 20.4, respectively. HTLV-1 prevalence may be high outside areas where HTLV-1 previously was known to be endemic.

After the addition of human T-cell lymphotropic virus type I (HTLV-I)-infected lymphocytes to enterocyte monolayers, the lymphocytes adhered via microvilli from both cell types and shed virus onto the enterocyte surface. Virus fused with the epithelial membrane and infected these cells as confirmed by electron microscopic immunocytochemistry, in situ hybridization, and amplification by polymera...

Infection with human T-lymphotropic virus type 1 (HTLV-1) can be associated with hematologic malignancy, inflammatory syndromes, or infectious complications. Herein, we bring attention to HTLV-1 infection complications as we discuss a case of disseminated cryptococcosis in a patient with HTLV-1-associated T cell lymphoma.

Because Gibraltar's macaques (Macaca sylvanus) have frequent contact with humans, we assayed 79 macaques for antibodies to enzootic primate viruses. All macaques were seronegative for herpesvirus B, simian T-cell lymphotropic virus, simian retrovirus, simian immunodeficiency virus, and rhesus cytomegalovirus. Seroprevalence of simian foamy virus reached 88% among adult animals.

At least four, and possibly six, molecular subtypes of human T-cell lymphotropic virus type I (HTLV-I) exist: one is confined to Melanesia/Australia, one is ubiquitous, and the others are found only in Africa. Molecular epidemiology suggests that all subtypes arose from separate interspecies transmissions from simians to humans.

We report the cases of 5 adolescents with human T lymphotropic virus type 1-associated myelopathy/tropical spastic paraparesis, acquired in all but 1 case from the mother. The first symptom in all patients was difficulty in running, which was present for many years before the final diagnosis was made. Follow-up showed an indolent progression, regardless of treatment strategy.