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Report from the World Health Organization's Product Development for Vaccines Advisory Committee (PDVAC) meeting, Geneva, 7-9th Sep 2015.

ABSTRACT: There are more vaccines in development, against a greater number of pathogens, than ever before. A challenge with this exceptional level of activity and investment is how to select and resource the most promising approaches to have the most significant impact on public health. The WHO Product Development for Vaccines Advisory Committee (PDVAC) was established in 2014 to provide strategic advice and recommendations to WHO for vaccines in clinical development that could have a significant impact on public health in low and middle income countries. On 7-9th September 2015, PDVAC was convened for the second time, when the committee reviewed vaccine developments in 24 disease areas. This report summarises the key recommendations from that consultation.

SUBMITTER: Giersing BK

PROVIDER: S-EPMC7130468 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Report from the World Health Organization's Product Development for Vaccines Advisory Committee (PDVAC) meeting, Geneva, 7-9th Sep 2015.

Giersing Birgitte K BK Modjarrad Kayvon K Kaslow David C DC Moorthy Vasee S VS

Vaccine 20160315 26

There are more vaccines in development, against a greater number of pathogens, than ever before. A challenge with this exceptional level of activity and investment is how to select and resource the most promising approaches to have the most significant impact on public health. The WHO Product Development for Vaccines Advisory Committee (PDVAC) was established in 2014 to provide strategic advice and recommendations to WHO for vaccines in clinical development that could have a significant impact o ...[more]

PMID: 26993336

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Project description:Policy Points Food and Drug Administration (FDA) advisory committee recommendations and the agency's final actions exhibit high rates of agreement, with cases of disagreement tending to reflect the proposed action type and degree of advisory committee consensus. In the case of disagreements, the FDA tended to be less likely than its advisory committees to approve new products, approve new supplemental indications, or enact new safety changes. These findings raise important issues regarding the factors that differentially shape decision making by advisory committees and the FDA as an agency, including institutional or reputational concerns.ContextThe Food and Drug Administration (FDA) convenes advisory committees to provide external scientific counsel on potential agency actions and to inform regulatory decision making. The degree to which advisory committees and their respective agency divisions disagree on recommendations has not been well characterized across product and action types.MethodsWe examined public documents from FDA advisory committee meetings and medical product databases for all FDA advisory committee meetings from 2008 through 2015. We classified the 376 voting meetings in that period by medical product, regulatory, and advisory committee meeting characteristics. We used multivariable logistic regression to determine the associations between these characteristics and discordance between the advisory committee's recommendations and the FDA's final actions.FindingsTwenty-two percent of the FDA's final actions were discordant with the advisory committee's recommendations. Of these, 75% resulted in the FDA making more restrictive decisions after favorable committee recommendations, and 25% resulted in the agency making less restrictive decisions after unfavorable committee recommendations. Discordance was associated with lower degrees of advisory committee consensus and was more likely for agency actions focused on medical product safety than for novel approvals or supplemental indications. Statements by public speakers, advisory committee conflicts of interest, and media coverage were not associated with discordance between the committee and the agency.ConclusionsThe FDA disagrees with the recommendation of its advisory committees a minority of the time, and in these cases it tends to be less likely to approve new products or supplemental indications and take safety actions. Deviations from recommendations thus offer an opportunity to understand the factors influencing decisions made by both the agency and its expert advisory groups.

Project description:This report updates the 2019-20 recommendations of the Advisory Committee on Immunization Practices (ACIP) regarding the use of seasonal influenza vaccines in the United States (MMWR Recomm Rep 2019;68[No. RR-3]). Routine annual influenza vaccination is recommended for all persons aged ?6 months who do not have contraindications. For each recipient, a licensed and age-appropriate vaccine should be used. Inactivated influenza vaccines (IIVs), recombinant influenza vaccine (RIV4), and live attenuated influenza vaccine (LAIV4) are expected to be available. Most influenza vaccines available for the 2020-21 season will be quadrivalent, with the exception of MF59-adjuvanted IIV, which is expected to be available in both quadrivalent and trivalent formulations.Updates to the recommendations described in this report reflect discussions during public meetings of ACIP held on October 23, 2019; February 26, 2020; and June 24, 2020. Primary updates to this report include the following two items. First, the composition of 2020-21 U.S. influenza vaccines includes updates to the influenza A(H1N1)pdm09, influenza A(H3N2), and influenza B/Victoria lineage components. Second, recent licensures of two new influenza vaccines, Fluzone High-Dose Quadrivalent and Fluad Quadrivalent, are discussed. Both new vaccines are licensed for persons aged ?65 years. Additional changes include updated discussion of contraindications and precautions to influenza vaccination and the accompanying Table, updated discussion concerning use of LAIV4 in the setting of influenza antiviral medication use, and updated recommendations concerning vaccination of persons with egg allergy who receive either cell culture-based IIV4 (ccIIV4) or RIV4.The 2020-21 influenza season will coincide with the continued or recurrent circulation of SARS-CoV-2 (the novel coronavirus associated with coronavirus disease 2019 [COVID-19]). Influenza vaccination of persons aged ?6 months to reduce prevalence of illness caused by influenza will reduce symptoms that might be confused with those of COVID-19. Prevention of and reduction in the severity of influenza illness and reduction of outpatient illnesses, hospitalizations, and intensive care unit admissions through influenza vaccination also could alleviate stress on the U.S. health care system. Guidance for vaccine planning during the pandemic is available at https://www.cdc.gov/vaccines/pandemic-guidance/index.html.This report focuses on recommendations for the use of vaccines for the prevention and control of seasonal influenza during the 2020-21 season in the United States. A brief summary of the recommendations and a link to the most recent Background Document containing additional information are available at https://www.cdc.gov/vaccines/hcp/acip-recs/vacc-specific/flu.html. These recommendations apply to U.S.-licensed influenza vaccines used within Food and Drug Administration (FDA)-licensed indications. Updates and other information are available from CDC's influenza website (https://www.cdc.gov/flu). Vaccination and health care providers should check this site periodically for additional information.

Dataset Information

Report from the World Health Organization's Product Development for Vaccines Advisory Committee (PDVAC) meeting, Geneva, 7-9th Sep 2015.

Publications

Report from the World Health Organization's Product Development for Vaccines Advisory Committee (PDVAC) meeting, Geneva, 7-9th Sep 2015.

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