Assessment of hepatitis B surface antigen negative blood units for HBV DNA among replacement blood donors in a hospital based blood bank in Nigeria.
Afr Health Sci
; 21(3): 1141-1147, 2021 Sep.
Article
em En
| MEDLINE
| ID: mdl-35222576
ABSTRACT
BACKGROUND:
Hepatitis B virus infection is one of the greatest threats to blood safety all over the world. The laboratory algorithm based on only the detection of hepatitis B surface antigen (HBsAg) leaves a gap for infected HBsAg negative donors to donate blood during the "window period" (WP) and late stages of infection.OBJECTIVE:
To estimate the frequency of the presence of HBV deoxyribonucleic acid (DNA) in HBsAg negative blood units screened using two different assays for HBsAg in a high endemic region.METHODS:
Frozen serum aliquot of 100 replacement blood donors who donated blood units that were HBsAg negative were retrieved and tested for HBV DNA. Sample positive for HBV DNA was sequenced by Sanger's method, genotyped and the viral load was determined.RESULTS:
One sample (1%) was positive for HBV DNA. The HBV viral load of the sample was 768,000 IU/ml. The partial S-gene of the Hepatitis B virus isolated was genotype E using the NCBI viral genotyping tool.CONCLUSIONS:
There is still a risk of HBV infected blood unit escaping detection when donor testing is limited to HBsAg screening. The use of NAT which can substantially reduce HBV infected blood donors from the donor pool should be considered.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Contexto em Saúde:
2_ODS3
Problema de saúde:
2_enfermedades_transmissibles
Assunto principal:
Hepatite B
/
Antígenos de Superfície da Hepatite B
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
País/Região como assunto:
Africa
Idioma:
En
Revista:
Afr Health Sci
Assunto da revista:
MEDICINA
/
SERVICOS DE SAUDE
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Nigéria