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Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States
BACKGROUND: Respiratory syncytial virus (RSV) is an established cause of serious lower respiratory disease in infants, elderly and high-risk populations. The OUTSMART surveillance program aims to characterize patient populations and currently circulating RSV strains, and monitor temporal and geograp...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6057637/ https://www.ncbi.nlm.nih.gov/pubmed/30040837 http://dx.doi.org/10.1371/journal.pone.0200319 |
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author | Ruzin, Alexey Pastula, Susan T. Levin-Sparenberg, Elizabeth Jiang, Xiaohui Fryzek, Jon Tovchigrechko, Andrey Lu, Bin Qi, Yanping Liu, Hui Jin, Hong Yu, Li Hackett, Judith Villafana, Tonya Esser, Mark T. |
author_facet | Ruzin, Alexey Pastula, Susan T. Levin-Sparenberg, Elizabeth Jiang, Xiaohui Fryzek, Jon Tovchigrechko, Andrey Lu, Bin Qi, Yanping Liu, Hui Jin, Hong Yu, Li Hackett, Judith Villafana, Tonya Esser, Mark T. |
author_sort | Ruzin, Alexey |
collection | PubMed |
description | BACKGROUND: Respiratory syncytial virus (RSV) is an established cause of serious lower respiratory disease in infants, elderly and high-risk populations. The OUTSMART surveillance program aims to characterize patient populations and currently circulating RSV strains, and monitor temporal and geographic evolution of RSV F and G proteins in the U.S. METHODS: The OUTSMART 2016–17 study collected RSV-positive samples from 25 RSVAlert(®) laboratories from 4 U.S. regions and Puerto Rico during November 2016 through March 2017. Frequencies of A and B subtypes and genotypes were determined for several demographic and geographic variables. To gauge the representativeness of the OUTSMART patients, results were compared to discharge data from the NEDS and NIS databases. RESULTS: A total of 1,041 RSV-positive samples with associated demographic data were obtained and the RSV F gene and second variable region of the G gene were sequenced. The majority of samples (76.0%) came from children under 2 years old: <1 year (48.4%), 1–2 years (27.6%). The OUTSMART patient sample was similar to NEDS and NIS for age, gender, and geographic location. Both OUTSMART and national RSV cases peaked in January. Of OUTSMART samples, 45.3% were subtype A, 53.7% were subtype B and 1.0% were mixed A and B. The percentage of RSV B cases increased with increasing age. Hospitalization (length of hospital stay, LOS, >24 hrs) occurred in 29.0% of patients of which 52.0% had RSV B. Outpatients (LOS <24 hrs) were 64.4% of total of which 73.3% were diagnosed in the ER and discharged, while only 6% were diagnosed in other outpatient settings. CONCLUSIONS: The OUTSMART 2016–17 study was representative of the U.S. RSV experience. Geographic and temporal information from the RSV surveillance program will be used to establish a molecular baseline of RSV F and G sequence variability and to help inform development of novel agents for RSV prophylaxis and treatment. |
format | Online Article Text |
id | pubmed-6057637 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-60576372018-08-06 Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States Ruzin, Alexey Pastula, Susan T. Levin-Sparenberg, Elizabeth Jiang, Xiaohui Fryzek, Jon Tovchigrechko, Andrey Lu, Bin Qi, Yanping Liu, Hui Jin, Hong Yu, Li Hackett, Judith Villafana, Tonya Esser, Mark T. PLoS One Research Article BACKGROUND: Respiratory syncytial virus (RSV) is an established cause of serious lower respiratory disease in infants, elderly and high-risk populations. The OUTSMART surveillance program aims to characterize patient populations and currently circulating RSV strains, and monitor temporal and geographic evolution of RSV F and G proteins in the U.S. METHODS: The OUTSMART 2016–17 study collected RSV-positive samples from 25 RSVAlert(®) laboratories from 4 U.S. regions and Puerto Rico during November 2016 through March 2017. Frequencies of A and B subtypes and genotypes were determined for several demographic and geographic variables. To gauge the representativeness of the OUTSMART patients, results were compared to discharge data from the NEDS and NIS databases. RESULTS: A total of 1,041 RSV-positive samples with associated demographic data were obtained and the RSV F gene and second variable region of the G gene were sequenced. The majority of samples (76.0%) came from children under 2 years old: <1 year (48.4%), 1–2 years (27.6%). The OUTSMART patient sample was similar to NEDS and NIS for age, gender, and geographic location. Both OUTSMART and national RSV cases peaked in January. Of OUTSMART samples, 45.3% were subtype A, 53.7% were subtype B and 1.0% were mixed A and B. The percentage of RSV B cases increased with increasing age. Hospitalization (length of hospital stay, LOS, >24 hrs) occurred in 29.0% of patients of which 52.0% had RSV B. Outpatients (LOS <24 hrs) were 64.4% of total of which 73.3% were diagnosed in the ER and discharged, while only 6% were diagnosed in other outpatient settings. CONCLUSIONS: The OUTSMART 2016–17 study was representative of the U.S. RSV experience. Geographic and temporal information from the RSV surveillance program will be used to establish a molecular baseline of RSV F and G sequence variability and to help inform development of novel agents for RSV prophylaxis and treatment. Public Library of Science 2018-07-24 /pmc/articles/PMC6057637/ /pubmed/30040837 http://dx.doi.org/10.1371/journal.pone.0200319 Text en © 2018 Ruzin et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Ruzin, Alexey Pastula, Susan T. Levin-Sparenberg, Elizabeth Jiang, Xiaohui Fryzek, Jon Tovchigrechko, Andrey Lu, Bin Qi, Yanping Liu, Hui Jin, Hong Yu, Li Hackett, Judith Villafana, Tonya Esser, Mark T. Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title | Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title_full | Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title_fullStr | Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title_full_unstemmed | Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title_short | Characterization of circulating RSV strains among subjects in the OUTSMART-RSV surveillance program during the 2016-17 winter viral season in the United States |
title_sort | characterization of circulating rsv strains among subjects in the outsmart-rsv surveillance program during the 2016-17 winter viral season in the united states |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6057637/ https://www.ncbi.nlm.nih.gov/pubmed/30040837 http://dx.doi.org/10.1371/journal.pone.0200319 |
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