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. 2016 Sep;144(12):2621-32.
doi: 10.1017/S095026881600090X. Epub 2016 May 11.

Temporal Association Between the Influenza Virus and Respiratory Syncytial Virus (RSV): RSV as a Predictor of Seasonal Influenza

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Temporal Association Between the Influenza Virus and Respiratory Syncytial Virus (RSV): RSV as a Predictor of Seasonal Influenza

A Míguez et al. Epidemiol Infect. .

Abstract

Epidemiologists agree that there is a prevailing seasonality in the presentation of epidemic waves of respiratory syncytial virus (RSV) infections and influenza. The aim of this study is to quantify the potential relationship between the activity of RSV, with respect to the influenza virus, in order to use the RSV seasonal curve as a predictor of the evolution of an influenza virus epidemic wave. Two statistical tools, logistic regression and time series, are used for predicting the evolution of influenza. Both logistic models and time series of influenza consider RSV information from previous weeks. Data consist of influenza and confirmed RSV cases reported in Comunitat Valenciana (Spain) during the period from week 40 (2010) to week 8 (2014). Binomial logistic regression models used to predict the two states of influenza wave, basal or peak, result in a rate of correct classification higher than 92% with the validation set. When a finer three-states categorization is established, basal, increasing peak and decreasing peak, the multinomial logistic model performs well in 88% of cases of the validation set. The ARMAX model fits well for influenza waves and shows good performance for short-term forecasts up to 3 weeks. The seasonal evolution of influenza virus can be predicted a minimum of 4 weeks in advance using logistic models based on RSV. It would be necessary to study more inter-pandemic seasons to establish a stronger relationship between the epidemic waves of both viruses.

Keywords: ARMAX; RSV; influenza; logistic regression.

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