I am delighted to know that, the Public Health Association of Bangladesh has chosen the right time and right theme for their Annual Scientific Conference 2021. Without a modern technology-based health system specially health hazard notification and prevention strategy, no country can protect and ensure the health of their citizens.I have confident that the public health experts of Bangladesh will show the pathway to develop a sustainableprevention-based health system to overcome the challenges of the present Covid-19 pandemic management. I also wish to congratulate the Public Health Association of Bangladesh for organizing the conference in this difficult situation and confronted with the volatile environment the conference has designed usinga virtual platform. I believe this is a great platform for the leading public health specialists of the country and invited global leaders to exchange skill and share knowledge about health system strengthening and solution for tomorrow. I hope, the participants of this virtual meeting will stimulate their thinking process to consider how to optimize desirable patient care with the revolutionary technological improvement in this sector. I wish the conference a great success. With warmest regards and best wishes.