Fig. 2From: Demonstrating the learning and impact of embedding participant involvement in a pandemic research study: the experience of the SARS-CoV-2 immunity & reinfection evaluation (SIREN) study UK, 2020–2023A timeline of key SIREN study moments in addition to PIP meeting activity and topics from May 2020 to March 2023. Phase 1 PIP meetings are highlighted in orange with Phase 2 PIP meetings highlighted in yellowBack to article page