Astrovirus infection in children living in the Central West region of Brazil

Santos, Rodrigo Alessandro Tôgo; Borges, Ana Maria Tavares; Costa, Paulo Sucasas; Teixeira, Jose M.; Giugliano, Loreny Gimenes; Leite, José Paulo Gagliardi; Cardoso, Divina das Dôres de Paula

doi:10.1590/s0074-02762007005000019

Cited by 16 publications

(16 citation statements)

References 31 publications

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“…This circulation pattern corroborates the seasonality data obtained from other studies in the region, which have shown higher incidence rates for astroviruses and caliciviruses during periods with elevated relative air humidity 19,20 . The focus on public health and preventive measures (even when treatment is not available) has given greater visibility to pregnant women (whether HIV-seropositive or not), because of the greater vulnerability of their immune system 10 .…”

Section: Resultssupporting

confidence: 91%

“…In a more recent study, Silva et al detected genotype 1 in 42.8% of the positive samples, followed by genotype 2 (23.2%) and genotype 4 (14.3%) 14 . Santos et al reported similar astrovirus detection rates (3%) among children less than five years of age who were hospitalized due to acute gastroenteritis in Goiânia and Brasília (7%) 19 . In another study, Andreasi et al 4 reported a detection rate of 3.1% for astrovirus, among children in Campo Grande (MS), and found that out of the total of 10 samples, six belonged to serotype 1…”

Section: Resultsmentioning

confidence: 78%

“…The reasons for this epidemiological pattern have not yet been elucidated, and require further investigation. From analysis on virus positivity according to the women's ages, we observed that the women with positive findings were predominantly aged 20-30 years, followed by 40-50 years, with prevalence rates a little higher than those detected for calicivirus 4.20 and astrovirus 14,19 in children with acute gastroenteritis under five years of age.…”

Section: Resultsmentioning

confidence: 84%

“…Data from the literature show that the detection rates for these viruses among children with gastroenteritis in Brazil vary between 12 and 47% 4,14,[19][20][21] . However, there is no information available on the prevalence of these agents among the adult female population in Brazil.…”

Section: Resultsmentioning

confidence: 99%

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Gastroenteric virus detection in fecal samples from women in Goiânia, State of Goiás, Brazil

Ferreira

Borges

Fiaccadori

et al. 2010

Rev. Soc. Bras. Med. Trop.

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Introduction: This was a prospective study that included women seen in the obstetrics and gynecology sector of Hospital das Clínicas, Federal University of Goiás, in Goiânia, State of Goiás, with the aim of detecting rotaviruses, adenoviruses, caliciviruses and astroviruses. Eighty-four women participated in the study and from these, 314 fecal samples were collected. Out of all of the women, 29 were seropositive for HIV and 55 were seronegative, and 45 and 39 were pregnant and non-pregnant, respectively. Methods: Fecal samples were collected from each woman once every two months over the period from July 2006 to June 2007, and they were screened for rotaviruses by means of polyacrylamide gel electrophoresis and immunoenzymatic assays, for caliciviruses and astroviruses by means of RT-PCR and for adenovirus by means of immunoenzymatic assays. The astroviruses were genotyped using nested PCR. Results: Among the 84 patients, 19 (22.6%) were positive for either calicivirus (14/19) or astrovirus (6/19), while one women was positive for both viruses in fecal samples collected on different occasions. Most of the positive samples were collected during the months of July and August (astrovirus) and September and October (calicivirus). None of the samples analyzed was positive for rotavirus or adenovirus. Gastroenteric viruses were detected in 13/19 (68.4%) of the pregnant women, whether HIV-seropositive or not. Conclusions: The results from the present study showed that neither pregnancy nor HIV-seropositive status among the women increased the risk of infection by any of the gastroenteric viruses studied. This study presents data on gastroenteric virus detection among pregnant and/or HIV-positive women.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

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Gastroenteric virus detection in fecal samples from women in Goiânia, State of Goiás, Brazil

Ferreira

Borges

Fiaccadori

et al. 2010

Rev. Soc. Bras. Med. Trop.

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“…In Brazil, recent studies have described astrovirus detection rates as varying from 3.4-28.2% (Gabbay et al 2007, Resque et al 2007, Santos et al 2007, Victoria et al 2007.…”

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confidence: 99%

The circulation of human astrovirus genotypes in the Central West Region of Brazil

Silva

Santos²,

Costa

et al. 2009

Mem. Inst. Oswaldo Cruz

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Identification of human astrovirus infections among children with acute gastroenteritis in the Southern Part of Vietnam during 2005–2006

Nguyen

Hoang

Pham

et al. 2007

Journal of Medical Virology

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A molecular epidemiological study on common diarrheal viruses was conducted in a children's hospital in Ho Chi Minh City between December 2005 and November 2006. Fecal samples were collected from 502 pediatric patients with acute gastroenteritis, and were screened for eight types of viral agents. Human astroviruses (HAstVs), which were detected with a prevalence of 13.9%, became the second most frequent viral enteropathogen. Although detected in both dry and rainy seasons, the majority (92.8%) of HAstVs in this study were found in the rainy season. Patients aged between 6 and 23 months were found to be more infected from astrovirus when compared to other age groups. The ratio between boys and girls was 2.3:1. The overall mean severity score of astrovirus positive patients was 11.8 +/- 2.45. The mean severity score of the inpatients was statistically higher than that of the outpatients; however, there was no difference in severity scores between the age groups observed. The clinical manifestations of astrovirus infections among the Vietnamese children were diarrhea, vomiting, fever, coughing, and coryza. All of the detected astroviruses belonged to genotype 1. The phylogenetic tree clearly indicated that HAstVs-1 worldwide could be classified into four different lineages, in which, Vietnamese astroviruses and other recently isolated strains from other countries clustered into the distinct lineage, 1d. These results provide important information on astrovirus infections among Vietnamese children.

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Astrovirus infection in children living in the Central West region of Brazil

Cited by 16 publications

References 31 publications

Gastroenteric virus detection in fecal samples from women in Goiânia, State of Goiás, Brazil

Gastroenteric virus detection in fecal samples from women in Goiânia, State of Goiás, Brazil

The circulation of human astrovirus genotypes in the Central West Region of Brazil

Identification of human astrovirus infections among children with acute gastroenteritis in the Southern Part of Vietnam during 2005–2006

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