AUTH/3157/2/19 - Voluntary admission by AstraZeneca

Substantiation of a claim for Fluenz Tetra

  • Received
    12 February 2019
  • Case number
    AUTH/3157/2/19
  • Applicable Code year
    2016
  • Completed
    08 May 2019
  • Breach Clause(s)
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    No appeal
  • Review
    Published in the 2020 May Review

Case Summary

AstraZeneca voluntarily admitted that a claim on the Fluenz Tetra (live attenuated influenza vaccine (LAIV)) website (fluenztetra.co.uk) could not be substantiated by the reference cited.

As Paragraph 5.6 of the Constitution and Procedure required the Director to treat a voluntary admission as a complaint the matter was taken up with AstraZeneca.

The detailed response from AstraZeneca is given below.

The Panel noted the statement at issue, ‘Approximately 125.6 million doses of nasal spray flu vaccine (trivalent and quadrivalent) have been distributed worldwide since the 2003/04 flu season until the end of the 2017/18 flu season [data on file], and there have been no laboratory-confirmed reports of LAIV virus transmission or illness associated with LAIV virus transmission [Izurieta et al 2005]’, appeared on the Fluenz Tetra nasal spray website and in a Q&A booklet aimed at health professionals. 

The statement was part of a response to the question ‘What is the transmission risk?’ on the website. 

The Q&A document question ‘Is there a risk of transmitting Fluenz Tetra viruses?’ was followed by ‘Vaccine recipients should be informed that Fluenz Tetra is a live attenuated influenza vaccine and has the potential for transmission to immunocompromised contacts’.  This was followed by the statement at issue.

The Panel noted AstraZeneca’s submission that the impression given by the statement at issue could not be supported by the references given and that, to date, there had been few published or documented cases of secondary transmission from vaccinated individuals to no-vaccinated individuals; whilst the numbers were very small, there had been cases.

The Panel considered that the claim was misleading and could not be substantiated and breaches of the Code were ruled including that AstraZeneca had failed to maintain high standards as acknowledged by AstraZeneca.