USC-L.A. County collaboration to track COVID-19’s local impact


Publish date

March 10, 2021


By Leigh Hopper

USC and the Los Angeles County Department of Public Health are launching a study that will follow up to 3,000 county residents over time to better understand social inequities exposed by COVID-19 as well as other impacts of the pandemic.

The project, called the Los Angeles Pandemic Surveillance Cohort, is a collaboration between the county; USC’s COVID-19 Pandemic Research Center (CPRC), housed within the Department of Population and Public Health Sciences at the Keck School of Medicine of USC; the USC Price School of Public Policy and the USC Schaeffer Center for Health Policy & Economics.

“It’s our privilege to help in this effort and actively partner with Los Angeles County to know more about the effect of this virus,” said USC President Carol Folt. “Working alongside the Department of Public Health, our research scientists will provide data that makes an impact in our community.”

Data show that L.A. County is one of the epicenters of the pandemic and that the virus is affecting communities unequally. The goal of the study is to closely track the continued impact of COVID-19 infections on communities and families, even as vaccination programs roll out. The study will allow the investigators to distinguish between those participants who are positive due to prior infection and those who are positive due to vaccination.

Data from 2,000 households

“This partnership between the Department of Public Health and USC will help us get a more complete and accurate picture of the pandemic in L.A. County,” said Barbara Ferrer, the county’s public health director. “Knowing how this picture changes over time will allow us to concentrate our efforts to slow the spread even more, providing resources and services directly to the residents and communities who need them the most.”

The initiative will enlist the L.A.-based market research firm LRW to recruit a representative group of 2,000 L.A. County households, including 2,000 adults and 1,000 children. The aim is to have the group represent the age, socioeconomic, gender, racial and ethnic makeup of the county. Participants will be drawn from neighborhoods with high, medium and low population densities.

Participants will be tested for COVID-19 antibodies, a sign of previous infection, and retested after two to three months. The research team will also track changes in their health and well-being during the pandemic by asking questions about their jobs, mental health and attitudes toward preventive measures like mask-wearing and social distancing.

“Even as the vaccination campaign proceeds and continuing measures such as masking, social distancing and other guidelines are embraced, it is clear that this pandemic has a long way to go,” said Howard Hu, professor and the Flora L. Thornton Chair of the Department of Population and Public Health Sciences at the Keck School of Medicine. “A rigorous understanding of the pandemic’s ongoing impact will be critical to devising the public health strategies to navigate this current situation and to allow us to return to some form of ‘normalcy’ as quickly and safely as possible.”

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