Inside Delhi's Outbreak: Lessons in Public Health Surveillance

This short communication summarizes field experience during the COVID-19 response in Delhi, India, highlighting key lessons learned from surveillance and containment operations. The work involved case investigation, contact tracing, and data management during the peak of the first outbreak. The experience revealed the importance of real-time data validation, cross-department coordination, and ethical, people-centered communication. These insights remain relevant for strengthening future epidemic surveillance and preparedness in an increasingly digital and interconnected world.