DIt is my great pleasure to invite you to attend the Fourth TEPHINET Southeast Asia and Western Pacific Bi-Regional Scientific Conference. The theme for this year's conference is "Applying Modern Technology to Upgrade Field Epidemiology". With the rapid progress in medical technology over recent years , many revolutionary techniques have been used in applied epidemiology and public health for more accurate analysis and better decision making. On this occasion, experts and professionals in relevant fields are invited to share their views and explore the latest developments in the application of technology to address epidemiological issues. I believe this conference will be enjoyable and productive to all participants and sincerely welcome your participation and contribution to the event.

Hsu-Sung Kuo, MD, MPH, PhD Chairman, Organizing Committee Director, Centers for Disease Control and FETP, Taiwan