Incidence and risk factors for SARS-CoV-2

October 2022

Using specimens collected from the CHASING COVID Cohort, we estimated the incidence of SARS-CoV-2 infection by January 2021. Among 3,422 participants who tested negative in May-September 2020 and retested during November 2020-January 2021, 161 (4.7%) tested positive for COVID-19. Males were more likely to test positive compared to females. The likelihood of getting infected is […]

COVID cases missed by standard surveillance during the Omicron surge

March 2022

We aimed to ascertain the extent to which active infections are underestimated by case reporting in standard surveillance (i.e., results reported to the state public health agency after testing at a clinic or pharmacy). We measured the point prevalence of self-reported COVID-19 cases among the cohort during the recent Omicron surge. The proportion of study […]

Study examines racial/ethnic disparities in exposure to COVID-19

January 2022

Since the onset of the COVID-19 pandemic, researchers have noted a disproportionate burden of COVID-19 infection, hospitalization, and death among Black and Hispanic individuals in the United States. In March 2020, the CDC reported that twice as many Black individuals were hospitalized with COVID-19 than were proportionally represented in the U.S. These disparities may be […]

Determinants of vaccine hesitancy and uptake

January 2022

We explored the relationships between various factors and vaccine hesitancy over time, and the association between hesitancy and subsequent vaccine uptake among populations eligible to be vaccinated. We found that while vaccine delay has decreased significantly in the cohort between October 2020 (before vaccines were available) to July 2021 (when vaccines were widely available), vaccine […]

Patterns of preferences for SARS-CoV-2 testing

December 2021

We analyzed data from the discrete choice experiment on SARS-CoV-2 testing features and found five distinct patterns of preferences among our participants: Noninvasive home testers, who were the most strongly influenced by specimen collection methods and preferred less invasive methods; Fast-track testers, who were most influenced by result turnaround time, favoring immediate and same-day results; […]

Parents’ intentions to vaccinate children

December 2021

About half of the CHASING COVID Cohort participants who are parents reported that their children were vaccinated against COVID-19 when they became eligible. Parents’ hesitancy to vaccinate their children against COVID-19 differed by parental race and ethnicity, gender, education level, and previous experience with COVID-19 and the child’s age, with older children more likely to […]

Gathering for Thanksgiving and risk perception

April 2021

We explored the relationships between individuals’ behaviors, risk perceptions, and decisions to gather with other households during Thanksgiving in late November 2020 and the risk of subsequent SARS-CoV-2 test seeking and diagnosis. We found those who regularly engaged in higher COVID-19 risk activities and those who had a low-risk perception of COVID-19 were more likely […]

Recent SARS-CoV-2 seroconversion

April 2021

The CHASING COVID Cohort has conducted two rounds of serologic testing for SARS-CoV-2 antibodies, the first from May to September, 2020 (Period 1), and the second from November 2020 to January 2021 (Period 2). In a recent pre-print, we assess the cumulative incidence and recent incidence among the 4,235 participants who provided samples in Period […]

Information and misinformation about COVID-19

April 2021

We explored CHASING COVID Cohort participants’ beliefs about the coronavirus and claims they saw on social media using responses from the baseline screening survey from March 28 to April, 20 2020, before much was known about the virus. At that time, the top three trusted sources of COVID-19 information were the United States Centers for […]