Vaccination Adjuved Against Hepatitis B in SNS Workers Typed as no Responders to Conventional Vaccines

Vaccination Adjuved Against Hepatitis B in SNS Workers Typed as no Responders to Conventional Vaccines

Vaccination Adjuved Against Hepatitis B in SNS Workers Typed as no Responders to Conventional Vaccines

Health workers with biological risk in their tasks, who have been vaccinated as non-responders to conventional vaccination against Hepatitis B. To provide Health workers-staff with an additional protection tool against hepatitis B infection. To evaluate the efficacy of the adjuvanted vaccine in healthy nonresponders to conventional hepatitis B vaccine.

An interventional, phase 4, single group assignment, without masking (open label), preventive clinical trial was carried out in health workers with biological risk in their tasks, who have been filed as non-responders to conventional vaccination against Hepatitis B. Methods: 67 health workers with biological risk in their tasks, who have been filed as non-responders to conventional vaccination against Hepatitis B, were enrolled in the Clinical Trial. All participants were from 18 years up to 64 years old. The criteria defining them as non-responders to the conventional hepatitis B vaccine is anti HBsAb titers < 10 mUI/ml following the application of six doses of conventional vaccine at 20 lg doses (two complete guidelines). The objective of this study was to provide Health workersstaff with an additional protection tool against hepatitis B infection, and to evaluate the efficacy of the adjuvanted vaccine in healthy non-responders to conventional hepatitis B vaccine.

The primary immunisation consists of 4 separate 0.5 ml doses of FENDRIX administered at the following schedule: 1 month, 2 months and 6 months from the date of the first dose. Once initiated, the primary course of vaccination at 0, 1, 2 and 6 months should be completed with Fendrix, and not with other commercially available HBV vaccine

The primary immunisation consists of 4 separate 0.5 ml doses administered at the following schedule: 1 month, 2 months and 6 months from the date of the first dose. Once initiated, the primary course of vaccination at 0, 1, 2 and 6 months should be completed with Fendrix, and not with other commercially available HBV vaccine

Measurement of antibody antiHBs: before the first dose and a month after the administration of each dose.

Inclusion Criteria: NHS workers -including university students doing their internships in health centres dependent on the National Health System (inclusion of students is regulated and limited by specific instructions on labour prevention in each autonomous community). Criteria defining them as NO responders to the conventional hepatitis B vaccine: anti HBsAb titers <10 mIU / ml following the application of six doses of conventional vaccine at 20 μg doses (two complete guidelines). Exclusion Criteria: Known allergy to the active substance or any of the other ingredients of the medicinal product (included in section 6 of the product data sheet). Subjects that have ever had an allergic reaction to any vaccine against hepatitis B. Subjects have a serious infection with fever. Subjects for whom informed consent is not obtained. Subjects that have not revoked the consent initially signed.

Bravo-Grande JL, Asuncion Blanco-Gonzalez M, de la Torre-Robles JM, Asmat-Inostrosa MP, Fernandez-Escribano M, Villalobos IM, Covadonga Caso-Pita M, Hervella-Ordonez M, Canibano Cimas LM, de la Fuente-Martin JM, Luisa Rodriguez de la Pinta M, Olivas JRB, Munoz-Ruiperez C, Alonso Lopez MA, Del Campo MT, Antonieta Ramirez Perez M, Sanchez-Arcilla I, Marzola-Payares M, Rescalvo-Santiago F, Paula-Ortiz M, Sanchez-Santos JM, Lopez-Perez R. Vaccination adjuvated against hepatitis B in Spanish National Healthcare System (SNS) workers typed as non-responders to conventional vaccines. Vaccine. 2021 Jan 15;39(3):554-563. doi: 10.1016/j.vaccine.2020.12.006. Epub 2020 Dec 15.