Clinical patterns and seasonal trends in respiratory syncytial virus hospitalizations in São Paulo, Brazil.
Identifieur interne : 000339 ( Main/Exploration ); précédent : 000338; suivant : 000340Clinical patterns and seasonal trends in respiratory syncytial virus hospitalizations in São Paulo, Brazil.
Auteurs : S E Vieira [Brésil] ; K E Stewien ; D A Queiroz ; E L Durigon ; T J Török ; L J Anderson ; C R Miyao ; N. Hein ; V F Botosso ; M M Pahl ; A E Gilio ; B. Ejzenberg ; Y. OkaySource :
- Revista do Instituto de Medicina Tropical de Sao Paulo [ 0036-4665 ]
Descripteurs français
- KwdFr :
- Adolescent (MeSH), Brésil (épidémiologie), Enfant (MeSH), Enfant d'âge préscolaire (MeSH), Femelle (MeSH), Hospitalisation (MeSH), Humains (MeSH), Indice de gravité de la maladie (MeSH), Infections de l'appareil respiratoire (virologie), Infections de l'appareil respiratoire (épidémiologie), Infections à virus respiratoire syncytial (virologie), Infections à virus respiratoire syncytial (épidémiologie), Loi du khi-deux (MeSH), Mâle (MeSH), Nourrisson (MeSH), Nouveau-né (MeSH), Saisons (MeSH), Statistique non paramétrique (MeSH), Études prospectives (MeSH).
- MESH :
- virologie : Infections de l'appareil respiratoire, Infections à virus respiratoire syncytial.
- épidémiologie : Brésil, Infections de l'appareil respiratoire, Infections à virus respiratoire syncytial.
- Adolescent, Enfant, Enfant d'âge préscolaire, Femelle, Hospitalisation, Humains, Indice de gravité de la maladie, Loi du khi-deux, Mâle, Nourrisson, Nouveau-né, Saisons, Statistique non paramétrique, Études prospectives.
- Wicri :
- geographic : Brésil.
English descriptors
- KwdEn :
- Adolescent (MeSH), Brazil (epidemiology), Chi-Square Distribution (MeSH), Child (MeSH), Child, Preschool (MeSH), Female (MeSH), Hospitalization (MeSH), Humans (MeSH), Infant (MeSH), Infant, Newborn (MeSH), Male (MeSH), Prospective Studies (MeSH), Respiratory Syncytial Virus Infections (epidemiology), Respiratory Syncytial Virus Infections (virology), Respiratory Tract Infections (epidemiology), Respiratory Tract Infections (virology), Seasons (MeSH), Severity of Illness Index (MeSH), Statistics, Nonparametric (MeSH).
- MESH :
- geographic , epidemiology : Brazil.
- epidemiology : Respiratory Syncytial Virus Infections, Respiratory Tract Infections.
- virology : Respiratory Syncytial Virus Infections, Respiratory Tract Infections.
- Adolescent, Chi-Square Distribution, Child, Child, Preschool, Female, Hospitalization, Humans, Infant, Infant, Newborn, Male, Prospective Studies, Seasons, Severity of Illness Index, Statistics, Nonparametric.
Abstract
The respiratory viruses are recognized as the most frequent lower respiratory tract pathogens for infants and young children in developed countries but less is known for developing populations. The authors conducted a prospective study to evaluate the occurrence, clinical patterns, and seasonal trends of viral infections among hospitalized children with lower respiratory tract disease (Group A). The presence of respiratory viruses in children's nasopharyngeal was assessed at admission in a pediatric ward. Cell cultures and immunofluorescence assays were used for viral identification. Complementary tests included blood and pleural cultures conducted for bacterial investigation. Clinical data and radiological exams were recorded at admission and throughout the hospitalization period. To better evaluate the results, a non- respiratory group of patients (Group B) was also constituted for comparison. Starting in February 1995, during a period of 18 months, 414 children were included- 239 in Group A and 175 in Group B. In Group A, 111 children (46.4%) had 114 viruses detected while only 5 children (2.9%) presented viruses in Group B. Respiratory Syncytial Virus was detected in 100 children from Group A (41.8%), Adenovirus in 11 (4.6%), Influenza A virus in 2 (0.8%), and Parainfluenza virus in one child (0.4%). In Group A, aerobic bacteria were found in 14 cases (5.8%). Respiratory Syncytial Virus was associated to other viruses and/or bacteria in six cases. There were two seasonal trends for Respiratory Syncytial Virus cases, which peaked in May and June. All children affected by the virus were younger than 3 years of age, mostly less than one year old. Episodic diffuse bronchial commitment and/or focal alveolar condensation were the clinical patterns more often associated to Respiratory Syncytial Virus cases. All children from Group A survived. In conclusion, it was observed that Respiratory Syncytial Virus was the most frequent pathogen found in hospitalized children admitted for severe respiratory diseases. Affected children were predominantly infants and boys presenting bronchiolitis and focal pneumonias. Similarly to what occurs in other subtropical regions, the virus outbreaks peak in the fall and their occurrence extends to the winter, which parallels an increase in hospital admissions due to respiratory diseases.
DOI: 10.1590/s0036-46652001000300002
PubMed: 11452319
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<term>Child, Preschool (MeSH)</term>
<term>Female (MeSH)</term>
<term>Hospitalization (MeSH)</term>
<term>Humans (MeSH)</term>
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<term>Respiratory Syncytial Virus Infections (virology)</term>
<term>Respiratory Tract Infections (epidemiology)</term>
<term>Respiratory Tract Infections (virology)</term>
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<term>Severity of Illness Index (MeSH)</term>
<term>Statistics, Nonparametric (MeSH)</term>
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<term>Brésil (épidémiologie)</term>
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<term>Enfant d'âge préscolaire (MeSH)</term>
<term>Femelle (MeSH)</term>
<term>Hospitalisation (MeSH)</term>
<term>Humains (MeSH)</term>
<term>Indice de gravité de la maladie (MeSH)</term>
<term>Infections de l'appareil respiratoire (virologie)</term>
<term>Infections de l'appareil respiratoire (épidémiologie)</term>
<term>Infections à virus respiratoire syncytial (virologie)</term>
<term>Infections à virus respiratoire syncytial (épidémiologie)</term>
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<term>Mâle (MeSH)</term>
<term>Nourrisson (MeSH)</term>
<term>Nouveau-né (MeSH)</term>
<term>Saisons (MeSH)</term>
<term>Statistique non paramétrique (MeSH)</term>
<term>Études prospectives (MeSH)</term>
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<term>Infections de l'appareil respiratoire</term>
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<term>Chi-Square Distribution</term>
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<term>Female</term>
<term>Hospitalization</term>
<term>Humans</term>
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<front><div type="abstract" xml:lang="en">The respiratory viruses are recognized as the most frequent lower respiratory tract pathogens for infants and young children in developed countries but less is known for developing populations. The authors conducted a prospective study to evaluate the occurrence, clinical patterns, and seasonal trends of viral infections among hospitalized children with lower respiratory tract disease (Group A). The presence of respiratory viruses in children's nasopharyngeal was assessed at admission in a pediatric ward. Cell cultures and immunofluorescence assays were used for viral identification. Complementary tests included blood and pleural cultures conducted for bacterial investigation. Clinical data and radiological exams were recorded at admission and throughout the hospitalization period. To better evaluate the results, a non- respiratory group of patients (Group B) was also constituted for comparison. Starting in February 1995, during a period of 18 months, 414 children were included- 239 in Group A and 175 in Group B. In Group A, 111 children (46.4%) had 114 viruses detected while only 5 children (2.9%) presented viruses in Group B. Respiratory Syncytial Virus was detected in 100 children from Group A (41.8%), Adenovirus in 11 (4.6%), Influenza A virus in 2 (0.8%), and Parainfluenza virus in one child (0.4%). In Group A, aerobic bacteria were found in 14 cases (5.8%). Respiratory Syncytial Virus was associated to other viruses and/or bacteria in six cases. There were two seasonal trends for Respiratory Syncytial Virus cases, which peaked in May and June. All children affected by the virus were younger than 3 years of age, mostly less than one year old. Episodic diffuse bronchial commitment and/or focal alveolar condensation were the clinical patterns more often associated to Respiratory Syncytial Virus cases. All children from Group A survived. In conclusion, it was observed that Respiratory Syncytial Virus was the most frequent pathogen found in hospitalized children admitted for severe respiratory diseases. Affected children were predominantly infants and boys presenting bronchiolitis and focal pneumonias. Similarly to what occurs in other subtropical regions, the virus outbreaks peak in the fall and their occurrence extends to the winter, which parallels an increase in hospital admissions due to respiratory diseases.</div>
</front>
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<ArticleTitle>Clinical patterns and seasonal trends in respiratory syncytial virus hospitalizations in São Paulo, Brazil.</ArticleTitle>
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<Abstract><AbstractText>The respiratory viruses are recognized as the most frequent lower respiratory tract pathogens for infants and young children in developed countries but less is known for developing populations. The authors conducted a prospective study to evaluate the occurrence, clinical patterns, and seasonal trends of viral infections among hospitalized children with lower respiratory tract disease (Group A). The presence of respiratory viruses in children's nasopharyngeal was assessed at admission in a pediatric ward. Cell cultures and immunofluorescence assays were used for viral identification. Complementary tests included blood and pleural cultures conducted for bacterial investigation. Clinical data and radiological exams were recorded at admission and throughout the hospitalization period. To better evaluate the results, a non- respiratory group of patients (Group B) was also constituted for comparison. Starting in February 1995, during a period of 18 months, 414 children were included- 239 in Group A and 175 in Group B. In Group A, 111 children (46.4%) had 114 viruses detected while only 5 children (2.9%) presented viruses in Group B. Respiratory Syncytial Virus was detected in 100 children from Group A (41.8%), Adenovirus in 11 (4.6%), Influenza A virus in 2 (0.8%), and Parainfluenza virus in one child (0.4%). In Group A, aerobic bacteria were found in 14 cases (5.8%). Respiratory Syncytial Virus was associated to other viruses and/or bacteria in six cases. There were two seasonal trends for Respiratory Syncytial Virus cases, which peaked in May and June. All children affected by the virus were younger than 3 years of age, mostly less than one year old. Episodic diffuse bronchial commitment and/or focal alveolar condensation were the clinical patterns more often associated to Respiratory Syncytial Virus cases. All children from Group A survived. In conclusion, it was observed that Respiratory Syncytial Virus was the most frequent pathogen found in hospitalized children admitted for severe respiratory diseases. Affected children were predominantly infants and boys presenting bronchiolitis and focal pneumonias. Similarly to what occurs in other subtropical regions, the virus outbreaks peak in the fall and their occurrence extends to the winter, which parallels an increase in hospital admissions due to respiratory diseases.</AbstractText>
</Abstract>
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<ForeName>S E</ForeName>
<Initials>SE</Initials>
<AffiliationInfo><Affiliation>Pediatrics Division, University Hospital, University of São Paulo, São Paulo, SP, Brazil.</Affiliation>
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<ForeName>K E</ForeName>
<Initials>KE</Initials>
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<Author ValidYN="Y"><LastName>Queiroz</LastName>
<ForeName>D A</ForeName>
<Initials>DA</Initials>
</Author>
<Author ValidYN="Y"><LastName>Durigon</LastName>
<ForeName>E L</ForeName>
<Initials>EL</Initials>
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<Initials>TJ</Initials>
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<Author ValidYN="Y"><LastName>Anderson</LastName>
<ForeName>L J</ForeName>
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<ForeName>C R</ForeName>
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<MeshHeading><DescriptorName UI="D007223" MajorTopicYN="N">Infant</DescriptorName>
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<MeshHeading><DescriptorName UI="D011446" MajorTopicYN="N">Prospective Studies</DescriptorName>
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<QualifierName UI="Q000821" MajorTopicYN="N">virology</QualifierName>
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<QualifierName UI="Q000821" MajorTopicYN="Y">virology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D012621" MajorTopicYN="Y">Seasons</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D012720" MajorTopicYN="N">Severity of Illness Index</DescriptorName>
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<MeshHeading><DescriptorName UI="D018709" MajorTopicYN="N">Statistics, Nonparametric</DescriptorName>
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<name sortKey="Botosso, V F" sort="Botosso, V F" uniqKey="Botosso V" first="V F" last="Botosso">V F Botosso</name>
<name sortKey="Durigon, E L" sort="Durigon, E L" uniqKey="Durigon E" first="E L" last="Durigon">E L Durigon</name>
<name sortKey="Ejzenberg, B" sort="Ejzenberg, B" uniqKey="Ejzenberg B" first="B" last="Ejzenberg">B. Ejzenberg</name>
<name sortKey="Gilio, A E" sort="Gilio, A E" uniqKey="Gilio A" first="A E" last="Gilio">A E Gilio</name>
<name sortKey="Hein, N" sort="Hein, N" uniqKey="Hein N" first="N" last="Hein">N. Hein</name>
<name sortKey="Miyao, C R" sort="Miyao, C R" uniqKey="Miyao C" first="C R" last="Miyao">C R Miyao</name>
<name sortKey="Okay, Y" sort="Okay, Y" uniqKey="Okay Y" first="Y" last="Okay">Y. Okay</name>
<name sortKey="Pahl, M M" sort="Pahl, M M" uniqKey="Pahl M" first="M M" last="Pahl">M M Pahl</name>
<name sortKey="Queiroz, D A" sort="Queiroz, D A" uniqKey="Queiroz D" first="D A" last="Queiroz">D A Queiroz</name>
<name sortKey="Stewien, K E" sort="Stewien, K E" uniqKey="Stewien K" first="K E" last="Stewien">K E Stewien</name>
<name sortKey="Torok, T J" sort="Torok, T J" uniqKey="Torok T" first="T J" last="Török">T J Török</name>
</noCountry>
<country name="Brésil"><region name="État de São Paulo"><name sortKey="Vieira, S E" sort="Vieira, S E" uniqKey="Vieira S" first="S E" last="Vieira">S E Vieira</name>
</region>
</country>
</tree>
</affiliations>
</record>
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