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Nascer e Crescer
Print version ISSN 0872-0754On-line version ISSN 2183-9417
Abstract
MARTINS, Mariana; AFONSO, Ivete; PORTELA, Alexandrina and ALMEIDA, Rui. Positive hepatitis B surface antigen after vaccination in a newborn. Nascer e Crescer [online]. 2018, vol.27, n.2, pp.105-107. ISSN 0872-0754.
Hepatitis B vaccination is included in the Portuguese national health plan. Vaccine-induced hepatitis B surface antigen positivity is described in literature, leading to diagnostic errors if the serological test is prematurely performed after vaccination. We report the case of a false positive transient B surface antigenemia in a premature baby born from a hepatitis B vaccinated mother. Caution is required when seropositivity is found after administration of hepatitis B vaccine in order to avoid anxiety in parents and unnecessary exams.
Keywords : Hepatitis B surface antigen; Hepatitis B virus; Vaccination.