NCT04533360

Prevalence of COVID-19 Antibodies Kingman AZ

Seroprevalence of SARS CoV2 Antibodies Among Adults in Kingman AZ

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 566 (actual)
• Sponsor: Kingman Regional Medical Center · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The COVID-19 disease outbreak is a historic event that has challenged medical systems in the United States. Currently, most reports of confirmed cases rely on the testing of symptomatic patients. These estimates of confirmed cases miss individuals who have recovered from infection, with mild or no symptoms, and individuals with symptoms who have not been tested due to the limited availability of tests. We are conducting serology testing within the community for SARS-CoV-2-specific antibodies through a serologic test could give insight into past COVID-19 infections within our community.

Detailed description

Adult participants aged 18 or greater will be recruited from the greater Kingman AZ area through social media, radio, newspaper, and a press release. Participants self-selected inclusion in the study by calling into a COVID-19 hotline and will be included in the sample data following self-report of absence of covid-19 symptoms. Participants will be scheduled for testing on the weeks of 09/28/2020 and 10/05/2020. Upon recruitment, participants will be asked to complete a demographic and behavioral survey, assessing socioeconomic status, interpersonal interactions, personal protective measures, and COVID-19 symptomology in the preceding two months. Two months after initial testing, all negative SARS-CoV-2-specific antibodies participants will be contacted for repeat testing and surveying. SARS-CoV-2-specific antibodies will be tested using a lateral flow immunoassay with the VITROS Anti-SARS-CoV-2 IgG test (Ortho-Clinical Diagnostics, Inc.) under the Emergency Use Authorization (EUA) from the Food and Drug Administration (FDA). The diagnostic sensitivity of the immunoassay was 87.5% and specificity was 100%. The positive and negative predictive value with a prevalence of 5% in the community was 100% and 99.3% respectively. All data will be de-identified and stored in a password protected file only visible to study investigators. All positive results were called back to participants by the lead author. Data obtained was then used to estimate the population prevalence of SARS-CoV-2-specific antibodies in the Kingman, Arizona population. Unweighted and weighted proportions of positive tests were calculated to match the 2018 census on sex, race, education, and income. Confidence intervals for unweighted data will be estimated using exact binomial models and for weighted and adjusted estimates using bootstrap methods. All data was analyzed using SPSS.

Conditions

• Covid19

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	VITROS Anti-SARS-CoV-2 IgG test	The VITROS Anti-SARS-CoV-2 IgG test is a lateral flow immunoassay produced by Ortho-Clinical Diagnostics Inc.

Timeline

• Start date: 2020-09-28
• Primary completion: 2020-10-09
• Completion: 2021-05-01
• First posted: 2020-08-31
• Last updated: 2022-03-31

Locations

1 site across 1 country: United States