In January 2006, USDA implemented a CSF surveillance plan developed by the National Surveillance Unit in States (and Puerto Rico) with a high risk for introduction of CSF. Currently, there are 38 NAHLN Laboratories approved for CSF surveillance testing in addition to the NVSL’s Diagnostic Virology Laboratory. The NVSL’s Foreign Animal Disease Diagnostic Laboratory (FADDL) located in Plum Island, New York, performs confirmatory testing. Over 33,773 samples have been tested by NAHLN Laboratories since the inception of the program (not including NVSL).
According to the USDA’s National Surveillance Unit, the total number of samples tested for CSF by NAHLN Laboratories in the Federal fiscal year (FY) 2010 (October 2009 through September 2010) was 6,294 (3,541 VDL/2,753 slaughter), and 916 samples (528 VDL/388 slaughter) have been tested thus far in Federal FY 2011 (October and November 2010).