President Yoon Suk Yeol's security aide, Wang Yun-jong, made a surprising appearance at the Bio USA conference in San Diego, raising questions about the purpose of his visit. This marks the first time in two decades that a high-ranking Korean security official has attended the event, signaling a shift in focus towards health security concerns related to biotechnology. Wang's presence at the conference comes amidst China's boycott of the event, potentially due to the US Biosecurity Act's implications for Chinese biotech companies. During his visit, Wang toured the booths of Korean and international biotech companies, and it is anticipated that Korean officials will engage in discussions on biosecurity with their US, Indian, and Japanese counterparts. The unexpected attendance of President Yoon's security aide at the Bio USA conference has sparked speculation regarding the motive behind the visit. This departure from the past two decades signifies a shift in prioritizing health security in biotechnology. China's boycott of the event is believed to be in response to the US Biosecurity Act's potential impact on Chinese biotech companies, particularly CDMOs. During his visit, Wang inspected booths of Korean and international biotech firms, foreshadowing upcoming high-level discussions between Korean officials and their US, Indian, and Japanese counterparts to address biosecurity concerns.