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Johns Hopkins University
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COVID-19 #vaccines have been anticipated for months. So why hasn't the U.S. made more progress on vaccination?

Tinglong Dai, an expert in operations management and health care analytics, explains the delays and what can be done to fix them.

Dai is an associate professor at the Johns Hopkins University Carey Business School.


The Johns Hopkins University was the first university in the Western Hemisphere based on the European research institution, with a mission both to teach and to advance human knowledge through discovery. Its establishment revolutionized U.S. higher education. Today, Johns Hopkins remains a world leader in education, research and patient care. It ranks first among U.S. universities in winning federal research and development funds.