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
Article
Dans Anglais
| LILACS
| ID: biblio-1039181
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.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Épidémies de maladies
/
Parvovirus humain B19
/
Érythème infectieux
Limites du sujet:
Adolescent
/
Adulte
/
Enfant
/
Femelle
/
Humains
/
Mâle
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Braz. j. infect. dis
Thème du journal:
Maladies transmissibles
Année:
2017
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Fiocruz/BR
/
Universidade Federal Fluminense/BR
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS