20210813 WHO有關疫苗「第三針」的視訊會議：追加針有助於管制疫情？需要何種研究？

20210813  WHO 視訊會議：追加針有助於管制疫情？需要何種研究？
Considerations in boosting COVID vaccine immune responses. 

議程 1450～1520  Additional evidence on booster doses: developers’ perspective  30分鐘給1主持人＋7廠商
https://cdn.who.int/media/docs/default-source/blue-print/final-agenda_covid19-vaccine-research.pdf?sfvrsn=7d11da6e_9

報告草稿（第8頁）

https://cdn.who.int/media/docs/default-source/blue-print/who-vaccines-research_13aug2021_final-for-web.pdf?sfvrsn=1e52ba60_7

Additional evidence on booster doses: developers’ perspective
Representatives from several manufacturing companies outlined long-term VE results from Phase 3 trials and plans or results from Phase 1 or 2 studies on 6–8-month booster vaccines.
Most booster vaccines were the prototype vaccine (with antigens matching earlier circulating virus) and did not reveal safety concerns.  In general, significantly increased neutralizing antibody response compared to the priming regimen across multiple VoCs was observed.  Some developers are working on Delta-specific or multivalent boosting vaccines.

WHO主要疫苗開發進度：無高端https://extranet.who.int/pqweb/sites/default/files/documents/Status_COVID_VAX_19August2021.pdf

至於所謂WHO贊助在哥倫比亞的疫苗試驗計畫，「高端今天稍晚表示，目前消息並非來自WHO正式對外公開新聞稿，公司正在與相關機構了解實際狀況及進度。」