References
- Sellers SA, Hagan RS, Hayden FG, et al. The hidden burden of influenza: a review of the extra-pulmonary complications of influenza infection. Influenza Other Respi Viruses. 2017;11:372–393.
- World Health Organization (WHO). Vaccines against influenza - WHO position paper. Wkly Epidemiol Rec. 2012;87:461–476.
- Thompson WW, Shay DK, Weintraub E, et al. Mortality associated with influenza and respiratory syncytial virus in the United States. JAMA. 2003;289:179–186.
- Baselga-Moreno V, Trushakova S, McNeil S, et al. Influenza epidemiology and influenza vaccine effectiveness during the 2016-2017 season in the global influenza hospital surveillance network (GIHSN). BMC Public Health [Internet]. 2019;19. [cited 2022 Mar 1]. Available from https://pubmed.ncbi.nlm.nih.gov/31046725/
- Tenforde MW, Talbot HK, Trabue CH, et al. Hospitalized adult influenza vaccine effectiveness network (HAIVEN) investigators. Influenza vaccine effectiveness against hospitalization in the United States, 2019-2020. J Infect Dis. 2021 Sep 1;224(5):813–820.
- Giacchetta I, Primieri C, Cavalieri R, et al. The burden of seasonal influenza in Italy: a systematic review of influenza-related complications, hospitalizations, and mortality. Influenza Other Respi Viruses [Internet]. 2021 [cited 2021 Nov 23]. Available from: http://www.ncbi.nlm.nih.gov/pubmed/34704361
- Lina B, Georges A, Burtseva E, et al. Complicated hospitalization due to influenza: results from the global hospital influenza Network for the 2017–2018 season. BMC Infect Dis. [Internet]. 2020;20. [cited 2022 Mar 1]. Available from: /pmc/articles/PMC7330273/
- European Centre for Disease Prevention and Control. Seasonal influenza vaccination in Europe – vaccination recommendations and coverage rates in the EU member States for eight influenza seasons 2007-2008 to 2014-2015. ECDC. 2017.
- Grohskopf LA, Sokolow LZ, Broder KR, et al. Prevention and control of seasonal influenza with vaccines: recommendations of the advisory committee on immunization practices-United States, 2018-19 influenza season. MMWR Recomm reports Morb Mortal Wkly report Recomm reports. 2018; 67:1–20.
- Twy N, Cowling BJ, Gao HZ, et al. Comparative immunogenicity of enhanced seasonal influenza vaccines in older adults: a systematic review and meta-analysis. J Infect Dis. 2019;219:1525–1535.
- Mannino S, Villa M, Apolone G, et al. Effectiveness of adjuvanted influenza vaccination in elderly subjects in northern Italy. Am J Epidemiol. Internet]. 2012 cited 2018 Jan 19;176:527–533. Available from;(6):. http://www.ncbi.nlm.nih.gov/pubmed/22940713
- Lapi F, Marconi E, Simonetti M, et al. Adjuvanted versus nonadjuvanted influenza vaccines and risk of hospitalizations for pneumonia and cerebro/cardiovascular events in the elderly. Expert Rev Vaccines. 2019;18(6):663–670.
- Ansaldi F, Zancolli M, Durando P, et al. Antibody response against heterogeneous circulating influenza virus strains elicited by MF59- and non-adjuvanted vaccines during seasons with good or partial matching between vaccine strain and clinical isolates. Vaccine. 2010;28(25):4123–4129.
- Ansaldi F, Bacilieri S, Durando P, et al. Cross-protection by MF59TM-adjuvanted influenza vaccine: neutralizing and haemagglutination-inhibiting antibody activity against A(H3N2) drifted influenza viruses. Vaccine. 2008;26(12):1525–1529.
- Beran J, Reynales H, Poder A, et al. Prevention of influenza during mismatched seasons in older adults with an MF59-adjuvanted quadrivalent influenza vaccine: a randomised, controlled, multicentre, phase 3 efficacy study. Lancet Infect Dis. 2021;21:1027–1037.
- Domnich A, Arata L, Amicizia D, et al. Effectiveness of MF59-adjuvanted seasonal influenza vaccine in the elderly: a systematic review and meta-analysis. Vaccine Internet]. 2017;35:513–520. [cited 2018 Jan 19]. Available from: http://linkinghub.elsevier.com/retrieve/pii/S0264410X1631218X
- Coleman BL, Sanderson R, Haag MDM, et al. Effectiveness of the MF59-adjuvanted trivalent or quadrivalent seasonal influenza vaccine among adults 65 years of age or older, a systematic review and meta-analysis. Influenza Other Respi Viruses. 2021;15:813–823.
- Murchu E O, Comber L, Jordan K , et al. Systematic review of the efficacy, effectiveness and safety of MF59® adjuvanted seasonal influenza vaccines for the prevention of laboratory-confirmed influenza in individuals ≥18 years of age. Rev Med Virol. 2022;e2329 .
- Lewis NM, Chung JR, Uyeki TM, et al. Interpretation of relative efficacy and effectiveness for influenza vaccines. Clin Infect Dis. Internet]. 2021 [cited 2022 Mar 6]. Available from; http://www.ncbi.nlm.nih.gov/pubmed/34875035
- CDC Seasonal Flu Vaccine Effectiveness Studies. [cited 2022 Jul]. Available from: https://www.cdc.gov/flu/vaccines-work/effectiveness-studies.htm
- Loiacono MM, Van Aalst R, Pokutnaya D, et al. Methods to account for measured and unmeasured confounders in influenza relative vaccine effectiveness studies: a brief review of the literature. Influenza Other Respir Viruses. 2022 Sep;16(5):846–850 .
- Jackson LA, Jackson ML, Nelson JC, et al. Evidence of bias in estimates of influenza vaccine effectiveness in seniors. Int J Epidemiol. 2006;35:337–344 .
- De Serres G. Selection bias in the comparison between adjuvanted and unadjuvanted influenza vaccine effectiveness. Vaccine. 2014;32:6596.
- Walzer P, Estève C, Barben J, et al. Impact of influenza vaccination on mortality in the oldest old: a propensity score-matched cohort study. Vaccines (Basel) Internet]. 2020;8:1–9. [cited 2021 Nov 23]. Available from: https://pubmed.ncbi.nlm.nih.gov/32635210/
- Lapi F, Levi M, Simonetti M, et al. Risk of prostate cancer in low-dose aspirin users: a retrospective cohort study. Int J Cancer. 2016;139. DOI:10.1002/ijc.30061.
- Vetrano DL, Zucchelli A, Bianchini E, et al. Patterns of oral corticosteroids use in primary care patients with severe asthma. Respir Med. 2020;166:105946.
- Dentali F, Fontanella A, Cohen AT, et al. Derivation and validation of a prediction model for venous thromboembolism in primary care. Thromb Haemost Internet]. 2020;120:692–701. [cited 2021 Oct 4]. Available from: https://pubmed.ncbi.nlm.nih.gov/32289864/
- Gross PA, Russo C, Dran S, et al. Time to earliest peak serum antibody response to influenza vaccine in the elderly. Clin Diagn Lab Immunol. 1997;4:491–492.
- Breslow NE. Statistics in epidemiology: the case-control study. J Am Stat Assoc. 1996;91(433):14–28.
- Psaty BM, Koepsell TD, Lin D, et al. Assessment and control for confounding by indication in observational studies. J Am Geriatr Soc. 1999;47:749–754.
- Corrao G, Ghirardi A, Segafredo G, et al. User-only design to assess drug effectiveness in clinical practice: application to bisphosphonates and secondary prevention of fractures. Pharmacoepidemiol Drug Saf. 2014;23(8):859-867.
- Lapi F, Marconi E, Gualano MR, et al. A cohort study on influenza vaccine and all-cause mortality in older adults: methodological concerns and public health implications. Drugs Aging Internet]. 2022;39:645–656. [cited 2022 Aug 2]. Available from: https://pubmed.ncbi.nlm.nih.gov/35867212/
- Austin PC. An introduction to propensity score methods for reducing the effects of confounding in observational studies. Multivariate Behav Res Internet]. 2011;46:399. [cited 2022 Jun 6]. Available from: /pmc/articles/PMC3144483/
- Evaluation of influenza vaccine effectiveness A guide to the design and interpretation of observational studies Immunization. Vaccines Biol. 2017. [cited 2022 Jun 6]. Available from: http://apps.who.int/
- Conroy RM, Pyörälä K, Fitzgerald AP, et al. Estimation of ten-year risk of fatal cardiovascular disease in Europe: the SCORE project. Eur Heart J Internet]. 2003;24:987–1003. [cited 2015 Sep 9]. Available from: http://www.ncbi.nlm.nih.gov/pubmed/12788299
- Simonsen L, Taylor RJ, Viboud C, et al. Mortality benefits of influenza vaccination in elderly people: an ongoing controversy. Lancet Infect Dis. 2007;7:658–666.
- Hughes MM, Reed C, Flannery B, et al. Projected population benefit of increased effectiveness and coverage of influenza vaccination on influenza burden in the United States. Clin Infect Dis. 2020;70:2496–2502.
- Perrotta D, Bella A, Rizzo C, et al. Participatory online surveillance as a supplementary tool to sentinel doctors for influenza-like illness surveillance in Italy. PLoS One. 2017;12(1):e0169801.
- Chu K. An introduction to sensitivity, specificity, predictive values and likelihood ratios. Emerg Med. Internet]. 1999;11:175–181. [cited 2022 Mar 6]. Available from: https://onlinelibrary.wiley.com/doi/full/10.1046/j.1442-2026.1999.00041.x
- Doyon-Plourde P, Fakih I, Tadount F, et al. Impact of influenza vaccination on healthcare utilization – a systematic review. Vaccine. 2019;37:3179–3189.
- McConeghy KW, Davidson HE, Canaday DH, et al. Cluster-randomized trial of adjuvanted vs. non-adjuvanted trivalent influenza vaccine in 823 U.S. nursing homes. Clin Infect Dis Internet]. 2020;71:e202–e205.[cited 2020 Sep 17]. Available from: http://www.ncbi.nlm.nih.gov/pubmed/32882710
- Iob A, Brianti G, Zamparo E, et al. Evidence of increased clinical protection of an MF59-adjuvant influenza vaccine compared to a non-adjuvant vaccine among elderly residents of long-term care facilities in Italy. Epidemiol Infect. 2005;133(4):687–693.
- Van Buynder PG, Konrad S, Van Buynder JL, et al. The comparative effectiveness of adjuvanted and unadjuvanted trivalent inactivated influenza vaccine (TIV) in the elderly. Vaccine Internet]. 2013;31:6122–6128. [cited 2018 Jan 19]. Available from: http://linkinghub.elsevier.com/retrieve/pii/S0264410X13010451
- Australian Technical Advisory Group on Immunisation (ATAGI), Statement on the administration of seasonal influenza vaccines in 2021. [cited 2022 Jul]. Available from: https://www.health.gov.au/sites/default/files/documents/2021/03/atagi-advice-on-seasonal-influenza-vaccines-in-2021.pdf.
- Joint Committee on Vaccination and Immunisation (JCVI), Advice on influenza vaccines for 2021/22. [cited 2022 Jul]. Available from: https://app.box.com/s/t5ockz9bb6xw6t2mrrzb144njplimfo0/file/737845224649
- Italian Ministry of Health. Prevention and control of influenza: recommendations for season 2019–2020. [cited 2022 Jul]. Available from: https://www.trovanorme.salute.gov.it/norme/renderNormsanPdf?anno=2019&codLeg=70621&parte=1%20&serie=null.
- Italian Ministry of Health. Prevention and control of influenza: recommendations for season 2022–2023. [cited 2022 Jul]. Available from: extension://elhekieabhbkpmcefcoobjddigjcaadp/https://www.trovanorme.salute.gov.it/norme/renderNormsanPdf?anno=2022&codLeg=87997&parte=1%20&serie=null.
- Skowronski DM, De Serres G, Janjua NZ, et al. Re: ‘effectiveness of adjuvanted influenza vaccination in elderly subjects in northern Italy’ Am J Epidemiol. 2013;177:593–594.
- Ernster VL. Nested case-control studies. Prev Med. 1994;23:587–590.
- Izurieta HS, Chillarige Y, Kelman J, et al. Relative effectiveness of influenza vaccines among the United States elderly, 2018-2019. J Infect Dis. 2020 Jun 29;222(2):278–287.
- Beyer WEP, Palache AM, Boulfich M, et al. Rationale for two influenza B lineages in seasonal vaccines: a meta-regression study on immunogenicity and controlled field trials. Vaccine. 2017 Jul 24;35(33):4167–4176.
- Boccalini S, Tacconi FM, Lai PL, et al. Appropriateness and preferential use of different seasonal influenza vaccines: a pilot study on the opinion of vaccinating physicians in Italy. Vaccine. 2019;37:915–918.
- Bonanni P, Villani A, Scotti S, et al. The recommended lifetime immunization schedule from the board of vaccination calendar for life in Italy: a continuing example of impact on public health policies. Vaccine Internet]. 2021 cited 2021 Mar 24;39:1183–1186. Available from: http://www.ncbi.nlm.nih.gov/pubmed/33589048
- Hempenius M, Groenwold RHH, de Boer A, et al. Drug exposure misclassification in pharmacoepidemiology: sources and relative impact. Pharmacoepidemiol Drug Saf. 2021;30:1703–1715.
- Domnich A, Orsi A, Trombetta CS, et al. COVID-19 and seasonal influenza vaccination: cross-protection, Co-administration, combination vaccines, and hesitancy. Pharmaceuticals (Basel). 2022 Mar 8;15(3):322.