Sustaining Independent Public Health Surveillance: The C3 Cohort as a National Platform for Vaccine Behavior, Long COVID, and Emerging Health Priorities

Our team has been leading the national CHASING COVID Cohort (C3) study of SARS-CoV-2, which focused on the burden of disease, long COVID incidence, prevalence, and risk factors, vaccine beliefs, intentions, and uptake, and many other public health-related outcomes (e.g., food insecurity, mental health) since the beginning of the SARS-CoV-2 pandemic. The C3 study, with thousands of participants from all 50 US states, is uniquely positioned to characterize the duration, persistence, and burden of long COVID longitudinally, with follow-up currently out to 6 years, as of March 2026. We intend to routinely field 2–3 cohort data collection waves per year focused on: 1) measurement of vaccine knowledge, beliefs, and behaviors; 2) describing the burden of persistent long COVID and its determinants; and 3) measuring other timely public health measures to fill important surveillance gaps.

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Pursuing population gains through better implementation.

The CUNY Institute for Implementation Science in Population Health (ISPH) was founded on the notion that substantial improvements in population health can be efficiently achieved through better implementation of existing strategies, policies, and interventions across multiple sectors. With that in mind, we study how to translate and scale-up evidence-based interventions and policies within clinical and community settings in order to improve population health and reduce health disparities.

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Team Spotlight
Investigator

Nash Rochman

Assistant Professor of Epidemiology and Biostatistics

Staff

Sara Ingram

Strategic Operations and Communication Manager

In the News
Struggling with daily HIV meds? Monthly shots may be the answer

Quotes Christian Grov CUNY ISPH Investigator | Advocate | March 20, 2026

A Year After USAID’s Termination: The Impact Has Been ‘Devastating’

Quotes Ellen Brazier CUNY ISPH Investigator | Capital & Main | March 11, 2026

Federal funding cuts threaten help for NYC domestic violence survivors

Quotes CUNY ISPH Executive Director Denis Nash | Healthbeat | January 28, 2026

Even The Trump Admin Seems Concerned The U.S. Could Lose Its Measles Elimination Status

Quotes Investigator Rachael Piltch-Loeb | HuffPost | January 21, 2026

Predictions for 2026 from Alexa B. D’Angelo, Ph.D., M.P.H. and Jeremiah Johnson

Features Postdoctoral fellow Alexa D’Angelo | Managed Healthcare Executive | January 7, 2026