Actualización del calendario vacunal en inmigrantes: aspectos prácticos y estudio comparativo sobre VHB

Abstract

The HBV virus causes 4 million acute infections annually and 1 millon deaths due to complications such as cirrhosis and hepatocarcinoma. These complications arise mainly from chronic infection, which affects 90% of infected infants and 5% of adults. The HBV vaccine provides close to 100% protection and is given in three doses at 0, 1 and 6 months. This study analized vaccination coverage against hepatitis B in immingrant population, considering epidemiological factors and vaccination patterns, and was carried out within the “VacunApS” Project and in collaboration with the “Cruz Roja”. Participants were classified into vaccinated and unvaccinated, where the latter were offered serology to detect the presence of the HbsAg antigen and its antibodies. The results indicated that less than half of the immigrants were vaccinated, highligting that half of the unvaccinated came from Latin America. In addition, vaccination was more commun among children under 18 years old, and different administration patterns were noted due to the lack of a global vaccination schedule, concluding with the need to implement vaccination campaigns among the immigrant population.