Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil
Abstract: Diarrhea by rotavirus is one of the main causes of mortality in children in developing countries, although the hospitalization rates (HR) for acute diarrhea have been found to have fallen since the introduction of the rotavirus vaccine. However, the patterns of the rotavirus are still not well understood and seasonal peaks occur throughout the year, with variations between countries and over time. The main objective of this study was to analyze the temporal behavior of HR caused by acute diarrhea in children under the age of one in the south of Brazil, between 2000 and 2011, and to explore changes in seasonality patters after the introduction of the vaccine against the rotavirus in 2006. Harmonic and multiscale wavelet analyses were used to detect seasonality and the points of change in the temporal scale. The statistical significance of each seasonality that was identified was tested using Fisher's test. The harmonic and wavelet analyses show annual seasonal and six-monthly patterns for HR, as well as a clear change after the introduction of the vaccine in 2006.
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Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz
2016
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oai:scielo:S0102-311X20160010050062016-10-18Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern BrazilMasukawa,Maria de Lourdes TeixeiraSouza,Eniuce Menezes deGimenes,EdilsonUchimura,Nelson ShozoMoriwaki,Adriana MayumiUchimura,Taqueco Teruya Rotavirus Dysentery Time Series Studies Abstract: Diarrhea by rotavirus is one of the main causes of mortality in children in developing countries, although the hospitalization rates (HR) for acute diarrhea have been found to have fallen since the introduction of the rotavirus vaccine. However, the patterns of the rotavirus are still not well understood and seasonal peaks occur throughout the year, with variations between countries and over time. The main objective of this study was to analyze the temporal behavior of HR caused by acute diarrhea in children under the age of one in the south of Brazil, between 2000 and 2011, and to explore changes in seasonality patters after the introduction of the vaccine against the rotavirus in 2006. Harmonic and multiscale wavelet analyses were used to detect seasonality and the points of change in the temporal scale. The statistical significance of each seasonality that was identified was tested using Fisher's test. The harmonic and wavelet analyses show annual seasonal and six-monthly patterns for HR, as well as a clear change after the introduction of the vaccine in 2006.info:eu-repo/semantics/openAccessEscola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo CruzCadernos de Saúde Pública v.32 n.10 20162016-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-311X2016001005006en10.1590/0102-311X00080515 |
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Masukawa,Maria de Lourdes Teixeira Souza,Eniuce Menezes de Gimenes,Edilson Uchimura,Nelson Shozo Moriwaki,Adriana Mayumi Uchimura,Taqueco Teruya |
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Masukawa,Maria de Lourdes Teixeira Souza,Eniuce Menezes de Gimenes,Edilson Uchimura,Nelson Shozo Moriwaki,Adriana Mayumi Uchimura,Taqueco Teruya Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
author_facet |
Masukawa,Maria de Lourdes Teixeira Souza,Eniuce Menezes de Gimenes,Edilson Uchimura,Nelson Shozo Moriwaki,Adriana Mayumi Uchimura,Taqueco Teruya |
author_sort |
Masukawa,Maria de Lourdes Teixeira |
title |
Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
title_short |
Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
title_full |
Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
title_fullStr |
Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
title_full_unstemmed |
Time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in Southern Brazil |
title_sort |
time series investigation of changes in seasonality of acute diarrhea hospitalizations before and after rotavirus vaccine in southern brazil |
description |
Abstract: Diarrhea by rotavirus is one of the main causes of mortality in children in developing countries, although the hospitalization rates (HR) for acute diarrhea have been found to have fallen since the introduction of the rotavirus vaccine. However, the patterns of the rotavirus are still not well understood and seasonal peaks occur throughout the year, with variations between countries and over time. The main objective of this study was to analyze the temporal behavior of HR caused by acute diarrhea in children under the age of one in the south of Brazil, between 2000 and 2011, and to explore changes in seasonality patters after the introduction of the vaccine against the rotavirus in 2006. Harmonic and multiscale wavelet analyses were used to detect seasonality and the points of change in the temporal scale. The statistical significance of each seasonality that was identified was tested using Fisher's test. The harmonic and wavelet analyses show annual seasonal and six-monthly patterns for HR, as well as a clear change after the introduction of the vaccine in 2006. |
publisher |
Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz |
publishDate |
2016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-311X2016001005006 |
work_keys_str_mv |
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