Countries should assess cases according to the presence of thrombosis with thrombocytopenia and the time to onset following vaccination, using the Brighton Case Definition of TTS.
Whilst we have some information on Comirnaty, Moderna (mRNA-1273), Vaxzevria and Covishield vaccines, there is limited post-market surveillance data on other COVID-19 vaccines and from low- and middle-income countries.
GACVS highly recommends that all countries conduct safety surveillance on all COVID-19 vaccines and provide data to their local authorities and to the WHO global database of individual case safety reports.
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目前迫切需要这样做，以便支持对这些拯救生命的疫苗提出循证建议。
This is urgently needed to support evidence-based recommendations on these life-saving vaccines.
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关于对接受疫苗者和社会的可能效益和风险进行的公开、透明和基于证据的沟通，对于保持信任至关重要。
Open, transparent, and evidence-based communication about the potential benefits and risks to recipients and the community is essential to maintain trust.
WHO is carefully monitoring the rollout of all COVID-19 vaccines and will continue to work closely with countries to manage potential risks, and to use science and data to drive response and recommendations.