Molecular diversity of human parvovirus B19 during two outbreaks of erythema infectiosum in Brazil
Braz. j. infect. dis
; 21(1): 102-106, Jan.-Feb. 2017. graf
Artículo
en Inglés
| LILACS
| ID: biblio-1039181
Biblioteca responsable:
BR1.1
ABSTRACT
Abstract This study was conducted to provide information on the genetic diversity of human parvovirus B19 (B19V) circulating in the municipality of Niterói, Rio de Janeiro, Southeast Brazil during 1996-2006, a period with two distinct outbreaks of B19V infection 1999-2000 and 2004-2005. A total of 27 sera from patients with erythema infectiosum and five sera from HIV-infected patients that tested positive for B19V DNA during the study period were analyzed. To genotype B19V strains, a semi-nested PCR for partial amplification of the capsid gene was performed and sequence analysis revealed that 31 sequences belonged to subgenotype 1a (G1a) of the main genotype 1 and one sequence was characterized as subgenotype 3b (G3b). The phylogenetic tree supported the division of the G1a into two well-defined clades with 1.3% of divergence. The low diversity of the G1a strains may be explained by the fact that all patients had acute B19V infection and 30/32 sera were collected during two distinct outbreaks. The G3b strain was from an HIV-infected patient who seroconverted to anti-B19 IgG antibodies in September/2005. This is the first report of G3b in the state of Rio de Janeiro.
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
LILACS
Asunto principal:
Brotes de Enfermedades
/
Parvovirus B19 Humano
/
Eritema Infeccioso
Límite:
Adolescente
/
Adulto
/
Niño
/
Femenino
/
Humanos
/
Masculino
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Braz. j. infect. dis
Asunto de la revista:
Enfermedades Transmisibles
Año:
2017
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Fiocruz/BR
/
Universidade Federal Fluminense/BR