1. Vaccine effectiveness against severe laboratory-confirmed influenza in children: results of two consecutive seasons in Italy
- Author
-
Menniti Ippolito, F, Da Cas, R, Traversa, G, Santuccio, C, Felicetti, P, Tartaglia, L, Trotta, F, Di Pietro, P, Barabino, P, Renna, S, Riceputi, L, Tovo, Pier Angelo, Gabiano, C, Urbino, A, Baroero, L, Le Serre, D, Virano, S, Perilongo, G, Daverio, M, Gnoato, E, Maretti, M, Galeazzo, B, Rubin, G, Scanferla, S, Da Dalt, L, Stefani, C, Zerbinati, C, Chiappini, E, Sollai, S, De Martino, M, Mannelli, F, Becciani, S, Giacalone, M, Montano, S, Remaschi, G, Stival, A, Furbetta, M, Abate, P, Leonardi, I, Pirozzi, N, Raucci, U, Reale, A, Rossi, R, Russo, C, Mancinelli, L, Manuela, O, Carlo, C, Mores, N, Romagnoli, C, Chiaretti, A, Compagnone, A, Riccardi, R, Delogu, G, Sali, M, Prete, V, Tipo, V, Dinardo, M, Auricchio, F, Polimeno, T, Sodano, G, Maccariello, A, Rafaniello, C, Fucà, F, Di Rosa, E, Altavilla, D, Mecchio, A, Arrigo, T, Italian Multicentre Study Group for Drug, Vaccine Safety in Children, Menniti Ippolito, Francesca, Da Cas, Roberto, Traversa, Giuseppe, Santuccio, Carmela, Felicetti, Patrizia, Tartaglia, Loriana, Trotta, Francesco, Di Pietro, Pasquale, Barabino, Paola, Renna, Salvatore, Riceputi, Laura, Tovo, Pier Angelo, Gabiano, Clara, Urbino, Antonio, Baroero, Luca, Le Serre, Daniele, Virano, Silvia, Perilongo, Giorgio, Daverio, Marco, Gnoato, Elisa, Maretti, Michela, Galeazzo, Beatrice, Rubin, Giulia, Scanferla, Stefania, Da Dalt, Liviana, Stefani, Chiara, Zerbinati, Claudia, Chiappini, Elena, Sollai, Sara, De Martino, Maurizio, Mannelli, Francesco, Becciani, Sabrina, Giacalone, Martina, Montano, Simona, Remaschi, Giulia, Stival, Alessia, Furbetta, Mario, Abate, Piera, Leonardi, Ilaria, Pirozzi, Nicola, Raucci, Umberto, Reale, Antonino, Rossi, Rossella, Russo, Cristina, Mancinelli, Livia, Manuela, Onori, Carlo, Concato, Mores, Nadia, Romagnoli, Costantino, Chiaretti, Antonio, Compagnone, Adele, Riccardi, Riccardo, Delogu, Giovanni, Sali, Michela, Prete, Valentina, Tipo, Vincenzo, Dinardo, Michele, Auricchio, Fabiana, Polimeno, Teodoro, Sodano, Giuseppe, Maccariello, Alessandra, Rafaniello, Concetta, Fucà, Fortunata, Di Rosa, Eleonora, Altavilla, Domenica, Mecchio, Anna, and Arrigo, Teresa
- Subjects
Male ,Pediatrics ,Laboratory-confirmed case ,Emergency Medical Services ,Immunology and Microbiology (all) ,Laboratory-confirmed cases ,Case-control study ,Children ,Influenza vaccine effectiveness ,Seasonal influenza ,Influenza vaccine effectivene ,Emergency medical services ,Medicine ,Child ,Vaccine effectiveness ,Vaccination ,Hospitalization ,Systematic review ,Infectious Diseases ,Treatment Outcome ,Settore MED/38 - PEDIATRIA GENERALE E SPECIALISTICA ,Italy ,Influenza Vaccines ,Child, Preschool ,Molecular Medicine ,Veterinary (all) ,Female ,Case-Control Studie ,Influenza Vaccine ,Settore BIO/19 - MICROBIOLOGIA GENERALE ,Human ,medicine.medical_specialty ,Settore BIO/14 - FARMACOLOGIA ,Adolescent ,Settore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICA ,Immunology and Microbiology(all) ,Influenza, Human ,Humans ,Influenza-like illness ,General Veterinary ,General Immunology and Microbiology ,business.industry ,Emergency Medical Service ,Public Health, Environmental and Occupational Health ,Infant ,Emergency department ,veterinary(all) ,Confidence interval ,Surgery ,Case-Control Studies ,Case-control study, Children, Influenza vaccine effectiveness, Laboratory-confirmed cases ,influenza in children ,business - Abstract
•Vaccine effectiveness in children visiting an Emergency Department for influenza.•Test negative case-control study in 11 paediatric centres in two influenza seasons.•Vaccine effectiveness in preventing ED visits: 38% (95% CI -52% to 75%).•Add information for recommendation for vaccination in children. Objective: To evaluate the effectiveness of seasonal influenza vaccine in preventing Emergency Department (ED) visits and hospitalisations for influenza like illness (ILI) in children. Methods: We conducted a test negative case-control study during the 2011-2012 and 2012-2013 influenza seasons. Eleven paediatric hospital/wards in seven Italian regions participated in the study. Consecutive children visiting the ED with an ILI, as diagnosed by the doctor according to the European Centre for Disease Control case definition, were eligible for the study. Data were collected from trained pharmacists/physicians by interviewing parents during the ED visit (or hospital admission) of their children. An influenza microbiological test (RT-PCR) was carried out in all children. Results: Seven-hundred and four children, from 6 months to 16 years of age, were enrolled: 262 children tested positive for one of the influenza viruses (cases) and 442 tested negative (controls). Cases were older than controls (median age 46 vs. 29 months), though with a similar prevalence of chronic conditions. Only 25 children (4%) were vaccinated in the study period. The overall age-adjusted vaccine effectiveness (VE) was 38% (95% confidence interval -52% to 75%). A higher VE was estimated for hospitalised children (53%; 95% confidence interval -45% to 85%). Discussion: This study supports the effectiveness of the seasonal influenza vaccine in preventing visits to the EDs and hospitalisations for ILI in children, although the estimates were not statistically significant and with wide confidence intervals. Future systematic reviews of available data will provide more robust evidence for recommending influenza vaccination in children. © 2014 The Authors.
- Published
- 2013