CHICAGO — Nearly a quarter of patients with multiple sclerosis (MS) being treated with natalizumab (Tysabri, Biogen Idec) convert from a negative status of JC virus (JCV) antibodies to positive, but ...

Information that sheds some light on the mechanism by which the multiple sclerosis drug natalizumab (Tysabri, Biogen) increases the risk for potentially fatal progressive multifocal ...

Recently, Quest Diagnostics (NYSE:DGX - News) received market authorization for its STRATIFY JCV Antibody ELISA testing service from the US Food and Drug Administration (:FDA). As the first ...

A deadly mosquito-borne virus has been detected in Bay County, Michigan health officials said Thursday. The Jamestown Canyon virus, which is spread through mosquitoes that have fed on infected deer or ...

(HealthDay News) — For patients with John Cunningham virus (JCV), natalizumab (Tysabri) treatment affects seroconversion and JCV index values, according to a study published online Jan. 27 in ...

OMAHA, Neb. (WOWT) - A mosquito-borne virus called the Jamestown Canyon Virus, or JCV, has been confirmed for the first time in Nebraska. Douglas County officials told 6 News the virus was detected on ...

Based on exclusive collaboration with Biogen Idec, the test is only available in the U.S. through Quest Diagnostics' Focus Diagnostics lab MADISON, N.J., Jan. 20, 2012 /PRNewswire/ -- Quest ...

(CBS DETROIT) - Michigan confirmed on Friday mosquitoes in the state have tested positive for the Jamestown Canyon virus. The department says the mosquitoes were collected in Bay, Oakland and Saginaw ...

The human polyomavirus, JC virus, has recently been associated with several human CNS tumors, including medulloblastomas and a broad range of glial-origin tumors. This ubiquitous virus is the ...