1. SARS-CoV-2 Viral Incidence, Antibody Point Prevalence, Associated Population Characteristics, and Vaccine Attitudes, South Carolina, February 2021
- Author
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Melissa S. Nolan, Virginie Daguise, Megan Davis, Joan M. Duwve, Windsor Westbrook Sherrill, Moonseong Heo, Alain H. Litwin, Mufaro Kanyangarara, Stella Self, Rongjie Huang, Jan M. Eberth, Lídia Gual-Gonzalez, Mary K. Lynn, Jeffrey Korte, Kenneth R Deans, Katrina Fryar, Jessica Siebenschuh, Graham Adams, Sarah Cockrell, Nitin Patel, Darin Thomas, Roxanne Ancheta, Scott Hagins, Danielle Johnson, Connor Ross, O’Neal Best, Madlyn Wills, Madison Collins, Sammy Khalil, Darin King, Sophie Henry, Josephine A. Morrisey, Michael Yan, Amelia Hornaday, Kateryna Parkhomenko, Callie Shirley, Sadie Hildebrandt, Hanson Cowan, Abbie Drake, and Ann Blair-Kennedy
- Subjects
Vaccines ,Attitude ,SARS-CoV-2 ,Seroepidemiologic Studies ,Incidence ,South Carolina ,Brief Report ,Prevalence ,Public Health, Environmental and Occupational Health ,COVID-19 ,Humans ,Antibodies, Viral - Abstract
The SARS-CoV-2 outbreak from October 2020 through February 2021 was the largest outbreak as of February 2021, and timely information on current representative prevalence, vaccination, and loss of prior antibody protection was unknown. In February 2021, the South Carolina Department of Health and Environmental Control conducted a random sampling point prevalence investigation consisting of viral and antibody testing and an associated health survey, after selecting participants aged ≥5 years using a population proportionate to size of South Carolina residents. A total of 1917 residents completed a viral test, 1803 completed an antibody test, and 1463 completed ≥1 test and a matched health survey. We found an incidence of 2.16 per 100 residents and seroprevalence of 16.4% among South Carolina residents aged ≥5 years. Undetectable immunoglobulin G and immunoglobulin M antibodies were noted in 28% of people with a previous positive test result, highlighting the need for targeted education among people who may be susceptible to reinfection. We also found a low rate of vaccine hesitancy in the state (13%). The results of this randomly selected surveillance and associated health survey have important implications for prospective COVID-19 public health response efforts. Most notably, this article provides a feasible framework for prompt rollout of a statewide evidence-based surveillance initiative.
- Published
- 2022