Epidemiological situation of hepatitis B in the Samara region

Abstract

The article presents an analysis of the primary incidence of hepatitis B in the Samara region from 1997 to 2018. It was noted that during the 1997–2000 period there was an increase in the carrying levels of viral hepatitis B agent, the incidence of acute hepatitis B, first detected by chronic hepatitis B. Since 2000–2001, there has been a dynamic decrease in the incidence of hepatitis B. It should be noted that from the 2006 (beginning of immunoprophylaxis) to 2018. in the Samara region more intensive decrease in indicators of incidence of hepatitis B was noted. Rates of decrease in incidence of an acute hepatitis In from 2006 to 2018 in the Samara region from 7,10 ⁄ 0000 to 0,70 ⁄ 0000v 10,1 times were observed (p < 0.01). Decrease in incidence of chronic hepatitis B was noted from 2006 to 2018 by 1.4 times (p < 0.01) from 14,50 ⁄ 0000 to 10,30 ⁄ 0000. Decrease in indicators of carriage of the causative agent of viral hepatitis B from 2006 to 2018 happened more in high gear, in comparison with indicators of incidence of chronic hepatitis B to 55,60 ⁄ 0000 to 6,60 ⁄ 0000 by 8.4 times (p < 0.01). From 2008 to 2018, the vaccination coverage against hepatitis B of the child population was 99.3–99.5 %, which led to a significant decrease in the incidence of hepatitis B in the Samara region. From 2011 to 2018, no cases of acute hepatitis B of the child population of the Samara region were registered. In the last three years, no cases of chronic hepatitis B of the child population have been recorded in the Samara region.