Research
Selected work

Estimating clinical severity of COVID-19 from the transmission dynamics in Wuhan, China
Most-cited epidemiological analysis of early COVID-19 clinical severity

Mortality in Puerto Rico after Hurricane Maria
Prompted federal review of U.S. disaster mortality accounting
The use of mobile phone data to inform analysis of COVID-19 pandemic epidemiology
Established the framework for mobility data in outbreak response
Surveillance to track progress toward polio eradication
Reports on the surveillance infrastructure behind the international polio eradication effort
Mobility data as a proxy for epidemic measures
Sole-authored — his own argument for how mobility data should be used in outbreak response
From the Data

Reductions in commuting mobility correlate with geographic differences in SARS-CoV-2 prevalence in New York City

Quantifying the dynamics of migration after Hurricane Maria in Puerto Rico

Lockdowns result in changes in human mobility which may impact the epidemiologic dynamics of SARS-CoV-2

Evaluating the reliability of mobility metrics from aggregated mobile phone data as proxies for SARS-CoV-2 transmission in the USA

Cell-phone traces reveal infection-associated behavioral change