Severe RSV infections in children and elderly during 2017/2018 winter season

Autor: Guiomar, Raquel, Pechirra, Pedro, Costa, Inês, Cristóvão, Paula, Conde, Patrícia, Nunes, Baltazar, Rodrigues, Ana Paula, Côrte-Real, Rita, Branquinho, Paula, Garcia, David, Conde, Sílvia, Rodrigues, Fernando, Pereira-Vaz, João, Alves, José, Ludivina, Freitas, Mota Vieira, Luísa, Cabral Veloso, Rita, Bruges Armas, Jácome, Couto, Ana Rita, Ribeiro, Carlos, Barreto, Rosário, Cunha, Mário, Martins, Luís, Almeida, Sofia, Peres, Maria João, Viseu, Regina, Mota, Paula, Lopes, Paulo, Soares, Vânia, Vale, Fátima, Fonseca, Patrícia, Toscano, Cristina, Dias, Ana
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Popis: DDI_INSA em colaboração com o DEP-INSA e a Rede Portuguesa de Laboratórios para o Diagnóstico da Gripe Background: Respiratory syncytial virus (RSV) is one of the most frequent and important respiratory viral agent that causes respiratory infection complications in younger children and elderly. RSV has an autumn / winter seasonality detected in cocirculation with influenza and other respiratory viruses. Material and Methods: During 2017/2018 season, 14 hospitals from Portugal mainland and Atlantic Island tested 4278 swabs for influenza, respiratory syncytial virus (RSV) and other respiratory viruses (oRV). Data on age and hospital service were recorded. Samples were collected from patients with mild to severe respiratory infections. Severity was correlated with the need for hospitalization. The study aimed to determine the age groups that had experienced severe RSV infections during the 2017/2018 season with the need of hospitalization, including in intensive care units (ICU). Results: Between October/2017-May/2018 were tested 4278 swabs for influenza, RSV and oRV (picornavirus, adenovirus, bocavirus, metapneumovirus, parainfluenzavirus, coronavirus). A total of 43%(1830) swabs were positive, from these 35%(639) were outpatients, 61%(1112) were hospitalized and 4% (79) were at ICU. The prevalence found were: Influenza 63%(1157), RSV 15%(266), oRV 13%(247) and 9%(160) of the cases were mixed infections. Influenza was detected in more than 70% of the positives swabs in patients aged above 15 years old. The oRV played a major role in respiratory infections in children, 0-4 and 5-14 years old, detected in 23% and 21% of the cases ,respectively. RSV was the predominant virus identified in toddlers, under 4 years old (29% of the positive samples and in 85% of codetection ). Among elderly 65+, RSV was confirmed in 13% of the respiratory infections. In hospitalized adults 65+, although influenza was detected in 80% of the positive swabs, RSV was 3.5 times more frequently detected than oRV, higher than the observed in outpatients (RSV 1.6 times more frequent than oRV). In hospitalized patients under 5 years old, RSV were detected in 31% of the positive swabs being 1.3 and 1.5 times more frequently than influenza and oRV, respectively. In ICU, 40%(32) of the cases were under 5 years old, influenza was confirmed in only 3% and RSV in 22% of the cases. 35%(28) ICU cases had 65+years old, influenza was confirmed in 57% and RSV in 14% of these patients. Conclusions: During 2017/2018, RSV was detected in severe respiratory infections. In young children (≤4 years old) RSV was the most frequently detected respiratory virus. In elderly 65+, besides influenza, RSV was frequently associated with severe respiratory infections. Prevention measures for RSV severe infections are essential not only in children but also among the elderly. N/A
Databáze: OpenAIRE