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Evaluation of ‘SAEFVIC’, A Pharmacovigilance Surveillance Scheme for the Spontaneous Reporting of Adverse Events Following Immunisation in Victoria, Australia

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Abstract

Introduction

Australia is traditionally an early adopter of vaccines, therefore comprehensive and effective post-licensure vaccine pharmacovigilance is critical to maintain confidence in immunisation, both nationally and internationally. With adverse event following immunisation (AEFI) surveillance the responsibility of Australian jurisdictions, Victoria operates an enhanced passive AEFI surveillance system integrated with clinical services, called ‘SAEFVIC’ (Surveillance of Adverse Events Following Vaccination In the Community).

Objective

The aim of this study was to evaluate Victoria’s current AEFI surveillance system ‘SAEFVIC’ and inform ongoing quality improvement of vaccine pharmacovigilance in Victoria and Australia.

Methods

We conducted a retrospective structured desktop evaluation of AEFI reporting received by SAEFVIC from 2007 to 2014, to evaluate the system according to its stated objectives, i.e. to improve AEFI reporting; provide AEFI signal detection; and to maintain consumer confidence in vaccination.

Results

AEFI reporting has tripled since SAEFVIC commenced (incidence risk ratio [IRR] 3.04, 95% confidence interval [CI] 2.35–3.93), raising Victoria to be the lead jurisdiction by AEFI reporting volume and to rank third by population reporting rate nationally. The largest increase was observed in children. Data were utilised to investigate potential signal events and inform vaccine policy. Signal detection required clinical suspicion by surveillance nurses, or prior vaccine-specific concerns. Subsequent vaccination post-AEFI was documented for 56.2% (95% CI 54.1–58.4) of reports, and the proportion of children due or overdue for vaccination was 2.3% higher for those reporting AEFI compared with the general population.

Conclusion

SAEFVIC has improved AEFI surveillance, facilitates signal investigation and validation, and supports consumer confidence in immunisation. Expansion of the system nationally has the potential to improve capacity and capability of vaccine pharmacovigilance, particularly through data consistency and jurisdictional comparability in Australia.

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Notes

  1.  Life-threatening event is an event/reaction in which the client was at risk of death at the time of the event/reaction; it does not refer to an event/reaction that hypothetically might have caused death if it were more severe.

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Acknowledgements

The authors wish to thank the SAEFVIC nursing and administration staff, the paediatricians supporting clinical services, and the SAEFVIC Advisory Board who support the development of SAEFVIC.

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Correspondence to Hazel J. Clothier.

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Funding

SAEFVIC is funded by the Department of Health and Human Services, Melbourne, VIC, Australia. Hazel Clothier is the recipient of an Australian Government Research Training Program Scholarship.

Conflict of interest

Hazel Clothier, Nigel Crawford and Jim Buttery receive salary for their respective employee roles with SAEFVIC. Jim Buttery also serves on data safety monitoring committees for the vaccine manufacturer Seqirus Pty Ltd, for which his employer, Monash Health, receives compensation. Melissa Russell and Heath Kelly have no conflicts of interest that are directly relevant to the content of this study.

Ethical approval

The Human Research Ethics Committee, Royal Childrens Hospital, granted approval for this study (DA017-2013-04).

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Clothier, H.J., Crawford, N.W., Russell, M. et al. Evaluation of ‘SAEFVIC’, A Pharmacovigilance Surveillance Scheme for the Spontaneous Reporting of Adverse Events Following Immunisation in Victoria, Australia. Drug Saf 40, 483–495 (2017). https://doi.org/10.1007/s40264-017-0520-7

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