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Viral hepatitis surveillance United States, 2015
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6/19/17
[PDF-1.95 MB]
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Description:The Centers for Disease Control and Prevention’s (CDC) National Notifiable Diseases Surveillance System (NNDSS) (1) receives viral hepatitis case reports electronically each week from state and territorial health departments in the United States (U.S.) via CDC’s National Electronic Telecommunications System for Surveillance (NETSS), a computerized public health surveillance system. The surveillance system accepts case reports of acute and chronic infections from all states and the District of Columbia, though not all jurisdictions report their data. In 2015, a total of 48 states submitted reports of acute hepatitis B virus (HBV) infection, 40 submitted reports of acute hepatitis C virus (HCV) infection, 40 submitted reports of chronic HBV infection, and 40 submitted reports of chronic HCV infection.
Viral hepatitis cases reported to NNDSS represent persons who were tested for and diagnosed with viral hepatitis infection based on specific surveillance case definitions (https://wwwn.cdc.gov/nndss/conditions/). Most persons infected with viral hepatitis are asymptomatic and so are not identified or reported. In 2011, CDC developed a statistical method to account for cases that were neither diagnosed nor reported in estimating the actual number of new (acute) cases of hepatitis A virus (HAV), HBV, and HCV infections from the number of cases reported for each disease (2); estimates in this report were derived using this method. Since estimates before 2011 were obtained using a different, unpublished method, they cannot be compared with those since 2011. This Summary describes estimated trends during 2011-2015 and reported cases of acute HAV, HBV, and HCV infections in 2015.
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2015HepSurveillanceRpt.pdf
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