Da Yun is a Medical Information Associate at CSL Seqirus APAC. At CSL Seqirus, Da Yun facilitates the quality use of vaccines and pharmaceutical products by responding to medical enquiries received from both external and internal stakeholders. With her expertise in pain and cardiovascular portfolios, Da Yun collaborates with Brand teams, ensuring the provision of valuable customer insights that shape Medical and Commercial strategies. She has successfully led a number of cross-functional and cross-country project teams and delivered impactful outcomes in decision-making, communication, and medical excellence, enhancing the performance of the Global and APAC Medical Affairs team. Da Yun holds a master’s degree in Biomedical and Health Sciences, completing a research project in antibiotic resistance, and is bilingual in English and Korean.

With over 15 years of experience in brand and marketing communications across healthcare and consumer goods, Bree brings a practical, hands-on approach to developing patient solutions that truly make a difference. She’s worked across a wide range of therapeutic areas and has a strong focus on creating support services that improve the experience for patients, healthcare professionals, and the organisations behind them. Bree is passionate about making healthcare more accessible and patient-centred. Her work is driven by a commitment to improving well-being and ensuring the quality use of medicines—whether through education, engagement, or practical tools that support real-world outcomes. Having led the design and delivery of numerous programs, Bree understands what it takes to create solutions that are not only effective but also sustainable. She’s known for her ability to work closely with clients to understand their challenges and bring forward tailored, thoughtful solutions that meet the needs of all stakeholders.