1
|
Jain A, Kant R. Genotypes of erythrovirus B19, their geographical distribution & circulation in cases with various clinical manifestations. Indian J Med Res 2018; 147:239-247. [PMID: 29923512 PMCID: PMC6022381 DOI: 10.4103/ijmr.ijmr_1816_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Indexed: 11/16/2022] Open
Abstract
Erythrovirus B19 (B19V) is one of the erythroviruses known to be pathogenic in humans. B19V is classified into three distinct genotypes; 1, 2 and 3, differing from each other by 2-13 per cent. Genotype 1 consists of the prototype B19V isolates, genotype 2 comprises the A6, LaLi and their related isolates while genotype 3 includes the V9- and V9-related isolates. The classification of genotype 1 into two subtypes (1A and 1B) and genotype 3 into two subtypes (3a and 3b) with an estimated nucleotide difference of about 5 per cent has been done. Predominance of genotype 1 across all the continents is seen followed by genotypes 2 and 3. There are no disease-specific genotypes. All the three genotypes have been found in symptomatic as well as asymptomatic individuals and have been reported from several countries across the world. The prevalence of genotype 2 in older populations and its absence from current circulation in Northern Europe has also been reported. The present review focuses on geographic distribution and association of genotypes of B19V with different clinical manifestations.
Collapse
Affiliation(s)
- Amita Jain
- Department of Microbiology, K.G. Medical University, Lucknow, India
| | - Ravi Kant
- Former Vice-Chancellor, K.G. Medical University, Lucknow, India
| |
Collapse
|
2
|
Cubel Garcia RDCN, Pereira RFA, Azevedo KMLD, Castro TXD, Mello FCA, Setubal S, Siqueira MM, Brown D, Oliveira SAD. Molecular diversity of human parvovirus B19 during two outbreaks of erythema infectiosum in Brazil. Braz J Infect Dis 2016; 21:102-106. [PMID: 27914222 PMCID: PMC9425480 DOI: 10.1016/j.bjid.2016.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 11/04/2016] [Accepted: 11/05/2016] [Indexed: 11/27/2022] Open
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.
Collapse
Affiliation(s)
| | - Renata Freire Alves Pereira
- Universidade Federal Fluminense, Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Niterói, RJ, Brazil; Universidade Federal Fluminense, Faculdade de Medicina, Programa de Pós Graduação em Ciências Médicas, Niterói, RJ, Brazil
| | - Kátia Martins Lopes de Azevedo
- Universidade Federal Fluminense, Faculdade de Medicina, Disciplina de Doenças Infecciosas e Parasitárias, Niterói, RJ, Brazil
| | - Tatiana Xavier de Castro
- Universidade Federal Fluminense, Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Niterói, RJ, Brazil
| | - Francisco C A Mello
- Universidade Federal Fluminense, Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Niterói, RJ, Brazil
| | - Sérgio Setubal
- Universidade Federal Fluminense, Faculdade de Medicina, Disciplina de Doenças Infecciosas e Parasitárias, Niterói, RJ, Brazil
| | - Marilda M Siqueira
- Fiocruz, Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios e Sarampo, Rio de Janeiro, RJ, Brazil
| | - David Brown
- Fiocruz, Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios e Sarampo, Rio de Janeiro, RJ, Brazil
| | - Solange Artimos de Oliveira
- Universidade Federal Fluminense, Faculdade de Medicina, Programa de Pós Graduação em Ciências Médicas, Niterói, RJ, Brazil; Universidade Federal Fluminense, Faculdade de Medicina, Disciplina de Doenças Infecciosas e Parasitárias, Niterói, RJ, Brazil
| |
Collapse
|