Active clinical trials for "Hepatitis B"

The primary aim of the study is to show that NeisVac-C does not influence the seroconversion rates induced by hepatitis B (Hep B), inactivated polio (IPV) and acellular pertussis (aP) vaccines in infants.

This study will evaluate the immunogenicity of the co-administration of different combinations of DTPa, IPV, hepatitis B, Hib and Men C vaccines during the first year of life.

The aim of the prospective study is to determine whether combination/ sequential therapy with Entecavir, Peginterferon alfa-2b and immunomodulators Granulocyte Macrophage Colony Stimulating Factor (GMCSF)+vaccine could induce HBsAg loss in chronic hepatitis B patients with maintained Hepatitis B Virus (HBV) DNA suppression on long-term nucleoside or nucleotide analogue (NA).

Hepatitis B (HBV) reactivation and hepatitis flare induced by cytotoxic chemotherapy is common in cancer patients who have chronic HBV infection. Lymphoma patients who had previous infected by HBV but negative for HBsAg have a the risk of HBV reactivation during chemotherapy, but prophylactic antiviral treatment is not a routine by current American Association for the Study of Liver Diseases (AASLD) guideline. Prophylactic entecavir might reduce the risk of HBV reactivation in such patients.

This study will assess the immunogenicity of GlaxoSmithKline (GSK) Biologicals' (formerly SmithKline Beecham Biologicals') DTPa-HBV-IPV/Hib (Infanrix hexa™) vaccine compared to the separate administration of DTPa-HBV-IPV (Infanrix™ penta) and Hib (Hiberix™) vaccines administered at 3 and 5 months of age.

For HBeAg(+) patients, interferon is used for 12 weeks. On 12th week of treatment, If HBV DNA is undetectable (<1000 copies/ml), interferon is continued alone for one year. If HBV DNA is still positive, nucleoside analogue is added for 3 months. After nucleoside analogue is added for 3 months, HBV DNA is tested again. If negative, stop nucleoside analogue and use interferon alone for another 6 months or longer. If HBV DNA is still positive, change to another nucleoside analogue or add another nucleoside analogue.

At present, children less than 15 y of age have been regarded as a key group for hepatitis B immunization in China. However, there is not yet special immunization strategy for population above 15 y of age. In this study, we investigated the seroprevalence of hepatitis B and immune response to HB vaccine among Chinese college students to uncover the need on universal mass vaccination or booster immunization only for students with HBV vaccination history against hepatitis B in Chinese college students to inform decision making.

The risk of vertical HBV transmission is related to HBV DNA level in pregnant women, around 30% in women with HBV DNA above 1, 000 000 I.U/mL despite serovaccination of newborns. Using tenofovir DF during the last trimester of pregnancy allows to reduce the risk, but data from Western countries are needed.

The aim of interferon therapy in HBeAg negative chronic hepatitis B was to make patients obtain immune control to hepatitis B virus defined as sustained viral response after treatment. However this target could not be get if patients keep HBV DNA positive during interferon treatment and offend relapse after treatment withdraw. In this trail, entecavir will add on patients with HBV DNA load ≥1000copies/ml after 3 months of peginterferon alpha 2a treatment, and the efficacies of the combine treatment will be evaluated by the rate of sustained viral response after 48 weeks of treatment and 24 week follow up.

This is a multicenter extension study of two European randomized, double-blind studies (V419-007 and V419-008). It describes long-term persistence of hepatitis B and pertussis antibody responses in healthy 4- to 5 year old children previously vaccinated with Vaxelis® or INFANRIX® hexa