Influenza Sentinel Surveillance and Severe Acute Respiratory Infection in a Reference Hospital in Southern Brazil

• Published in: Revista da Sociedade Brasileira de Medicina Tropical
• Main Authors: Heloisa Zimmerman Faggion, Jaqueline Leotte, Hygor Trombetta, Luciane Aparecida Pereira, Bruna Amaral Lapinski, Meri Bordignon Nogueira, Luine Rosele Vidal, Bernardo Machado Almeida, Ricardo Rasmussen Petterle, Sonia Mara Raboni
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sociedade Brasileira de Medicina Tropical (SBMT) 2019
• Subjects: Influenza vírus; Seasonal incidence; Viral respiratory infection; Arctic medicine. Tropical medicine; RC955-962; Arctic
• Online Access: https://doi.org/10.1590/0037-8682-0498-2017; https://doaj.org/article/0f290304f4bf4abe9cf52f249510ed1a

Abstract INTRODUCTION: We report the results of the active surveillance of influenza infections in hospitalized patients and the evaluation of the seasonality and correlation with temperature and rainfall data. METHODS: During the 2-year study period, 775 patients were tested for 15 respiratory viruses (RVs). RESULTS: Most of the 57% of (n=444) virus-positive samples were human rhinovirus and respiratory syncytial virus. However, 10.4% (n=46) were influenza virus (80% FluA; 20% FluB). Age and SARI were significantly associated with influenza. FluB circulation was higher is 2013. CONCLUSIONS: In the post-epidemic period, influenza remains an important cause of hospitalization in SARI patients.