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  1. Article ; Online: Association of social vulnerability index and masking adherence among children enrolled in COVID-19 community research partnership study.

    Dantuluri, Keerti L / Buahin, Asare / Uschner, Diane / DeWitt, Michael E / Rossman, Whitney / Dunn, Connell O / Hetherington, Timothy C / Priem, Jennifer / Castri, Paola / Lagarde, William H / Gibbs, Michael / Ahmed, Amina

    BMC public health

    2024  Volume 24, Issue 1, Page(s) 410

    Abstract: Background: Individuals with high social vulnerability index (SVI) have poorer outcomes with COVID-19. Masking reduces transmission of COVID-19 among children, but how SVI plays a role in masking behavior is unknown. We aimed to measure the association ... ...

    Abstract Background: Individuals with high social vulnerability index (SVI) have poorer outcomes with COVID-19. Masking reduces transmission of COVID-19 among children, but how SVI plays a role in masking behavior is unknown. We aimed to measure the association of SVI with masking adherence among children during the COVID-19 pandemic.
    Methods: We conducted a multi-site, prospective syndromic surveillance study among children aged 2 - 17 years in the Southeastern United States by daily electronic surveys which solicited symptoms of COVID-19-like illness, infection with or exposure to SARS-CoV-2, masking habits, and any receipt of COVID-19 vaccines. Parents/guardians submitted surveys for their children; adolescents 13 years and older could opt to submit their own surveys. Multivariable and univariate linear models were used to measure the associations of different predictors such as SVI with masking adherence.
    Results: One thousand four hundred sixty-one children from 6 states and 55 counties predominately from North and South Carolina were included in the analysis. Most children in the cohort were 5 - 11 years old, non-Hispanic White, from urban counties, and with low-moderate SVI. Overall masking adherence decreased over time, and older children had higher masking adherence throughout the study period compared with younger children. Children who resided in urban counties had greater masking adherence throughout the study period than those who resided in suburban or rural counties. Masking adherence was higher among children with both low and medium SVI than those with high SVI.
    Conclusions: Despite being at risk for more severe outcomes with COVID-19, children with high SVI had lower levels of masking adherence compared to those with low SVI. Our findings highlight opportunities for improved and targeted messaging in these vulnerable communities.
    MeSH term(s) Adolescent ; Child ; Humans ; United States ; Child, Preschool ; COVID-19/epidemiology ; COVID-19 Vaccines ; SARS-CoV-2 ; Pandemics ; Prospective Studies ; Social Vulnerability
    Chemical Substances COVID-19 Vaccines
    Language English
    Publishing date 2024-02-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041338-5
    ISSN 1471-2458 ; 1471-2458
    ISSN (online) 1471-2458
    ISSN 1471-2458
    DOI 10.1186/s12889-024-17931-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Human plasma-derived alpha

    Lagarde, William H / Courtney, Kecia L / Reiner, Barry / Steinmann, Kimberly / Tsalikian, Eva / Willi, Steven M

    Pediatric diabetes

    2020  Volume 22, Issue 2, Page(s) 192–201

    Abstract: Background: While circulating levels of alpha: Participants: Seventy-six participants (aged 6-35 years) were randomized at 25 centers within 3 months of T1DM diagnosis.: Methods: A Phase II, multicenter, partially blinded, placebo-controlled, ... ...

    Abstract Background: While circulating levels of alpha
    Participants: Seventy-six participants (aged 6-35 years) were randomized at 25 centers within 3 months of T1DM diagnosis.
    Methods: A Phase II, multicenter, partially blinded, placebo-controlled, proof-of-concept study evaluating four dosing regimens of alpha
    Results: Infusions were well tolerated with no new safety signals. All groups exhibited highly variable declines in the primary outcome measure at 52 weeks with no statistically significant difference from placebo. Interleukin-6 (IL-6) was reduced from baseline in all alpha
    Conclusion: Pharmacologic therapy with alpha
    MeSH term(s) Adolescent ; Adult ; C-Peptide/blood ; Child ; Diabetes Mellitus, Type 1/blood ; Diabetes Mellitus, Type 1/drug therapy ; Drug Administration Schedule ; Female ; Humans ; Infusions, Intravenous ; Interleukin-6/blood ; Male ; Proof of Concept Study ; Serine Proteinase Inhibitors/administration & dosage ; Serine Proteinase Inhibitors/pharmacokinetics ; Treatment Outcome ; Young Adult ; alpha 1-Antitrypsin/administration & dosage ; alpha 1-Antitrypsin/pharmacokinetics
    Chemical Substances C-Peptide ; Interleukin-6 ; Serine Proteinase Inhibitors ; alpha 1-Antitrypsin
    Language English
    Publishing date 2020-12-13
    Publishing country Denmark
    Document type Clinical Trial, Phase II ; Journal Article ; Multicenter Study ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 1502504-4
    ISSN 1399-5448 ; 1745-1426 ; 1399-543X
    ISSN (online) 1399-5448
    ISSN 1745-1426 ; 1399-543X
    DOI 10.1111/pedi.13162
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Feasibility of At-Home Virological and Serological Testing for SARS-CoV-2 in Children.

    Ahmed, Amina / Rossman, Whitney / Lu, Lauren C / Dunn, Connell O / Harris, Anna M / Priem, Jennifer S / Hetherington, Timothy C / Porzucek, Abigail J / Mores, Christopher N / Castri, Paola / Lagarde, William H / Dantuluri, Keerti L

    Open forum infectious diseases

    2022  Volume 9, Issue 9, Page(s) ofac459

    Abstract: Longitudinal virological and serological surveillance is essential for understanding severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) transmission among children but requires increased test capacity. We assessed the uptake of serial at-home ... ...

    Abstract Longitudinal virological and serological surveillance is essential for understanding severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) transmission among children but requires increased test capacity. We assessed the uptake of serial at-home testing in children (2-17 years) via mailed SARS-CoV-2 antibody and molecular tests. Completion rates demonstrated the feasibility and sustainability of at-home testing across age groups.
    Language English
    Publishing date 2022-09-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2757767-3
    ISSN 2328-8957
    ISSN 2328-8957
    DOI 10.1093/ofid/ofac459
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Survey of Adherence with COVID-19 Prevention Behaviors During the 2020 Thanksgiving and Winter Holidays Among Members of the COVID-19 Community Research Partnership.

    Peacock, James E / Herrington, David M / Edelstein, Sharon L / Seals, Austin L / Plumb, Ian D / Saydah, Sharon / Lagarde, William H / Runyon, Michael S / Maguire, Patrick D / Correa, Adolfo / Weintraub, William S / Wierzba, Thomas F / Sanders, John W

    Journal of community health

    2021  Volume 47, Issue 1, Page(s) 71–78

    Abstract: Prevention behaviors represent important public health tools to limit spread of SARS-CoV-2. Adherence with recommended public health prevention behaviors among 20000 + members of a COVID-19 syndromic surveillance cohort from the mid-Atlantic and ... ...

    Abstract Prevention behaviors represent important public health tools to limit spread of SARS-CoV-2. Adherence with recommended public health prevention behaviors among 20000 + members of a COVID-19 syndromic surveillance cohort from the mid-Atlantic and southeastern United States was assessed via electronic survey following the 2020 Thanksgiving and winter holiday (WH) seasons. Respondents were predominantly non-Hispanic Whites (90%), female (60%), and ≥ 50 years old (59%). Non-household members (NHM) were present at 47.1% of Thanksgiving gatherings and 69.3% of WH gatherings. Women were more likely than men to gather with NHM (p < 0.0001). Attending gatherings with NHM decreased with older age (Thanksgiving: 60.0% of participants aged < 30 years to 36.3% aged ≥ 70 years [p-trend < 0.0001]; WH: 81.6% of those < 30 years to 61.0% of those ≥ 70 years [p-trend < 0.0001]). Non-Hispanic Whites were more likely to gather with NHM than were Hispanics or non-Hispanic Blacks (p < 0.0001). Mask wearing, reported by 37.3% at Thanksgiving and 41.9% during the WH, was more common among older participants, non-Hispanic Blacks, and Hispanics when gatherings included NHM. In this survey, most people did not fully adhere to recommended public health safety behaviors when attending holiday gatherings. It remains unknown to what extent failure to observe these recommendations may have contributed to the COVID-19 surges observed following Thanksgiving and the winter holidays in the United States.
    MeSH term(s) Adult ; Aged ; COVID-19 ; Female ; Holidays ; Humans ; Male ; Middle Aged ; SARS-CoV-2 ; Seasons ; Surveys and Questionnaires ; United States
    Language English
    Publishing date 2021-08-12
    Publishing country Netherlands
    Document type Journal Article ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 426631-6
    ISSN 1573-3610 ; 0094-5145
    ISSN (online) 1573-3610
    ISSN 0094-5145
    DOI 10.1007/s10900-021-01021-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Changing Attitudes toward the COVID-19 Vaccine among North Carolina Participants in the COVID-19 Community Research Partnership.

    Enwezor, Chukwunyelu H / Peacock, James E / Seals, Austin L / Edelstein, Sharon L / Hinkelman, Amy N / Wierzba, Thomas F / Munawar, Iqra / Maguire, Patrick D / Lagarde, William H / Runyon, Michael S / Gibbs, Michael A / Gallaher, Thomas R / Sanders, John W / Herrington, David M

    Vaccines

    2021  Volume 9, Issue 8

    Abstract: Coronavirus Disease-2019 (COVID-19) vaccine acceptance is variable. We surveyed participants in the COVID-19 Community Research Partnership from 17 December 2020 to 13 January 2021 to assess vaccine receptiveness. Vaccine uptake was then monitored until ... ...

    Abstract Coronavirus Disease-2019 (COVID-19) vaccine acceptance is variable. We surveyed participants in the COVID-19 Community Research Partnership from 17 December 2020 to 13 January 2021 to assess vaccine receptiveness. Vaccine uptake was then monitored until 15 May 2021; 20,232 participants responded to the receptiveness survey with vaccination status accessed in 18,874 participants via daily follow-up surveys (participants not completing daily surveys ≥30 days to 15 May 2021, were excluded). In the initial survey, 4802 (23.8%) were vaccine hesitant. Hesitancy was most apparent in women (Adjusted RR 0.93,
    Language English
    Publishing date 2021-08-17
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2703319-3
    ISSN 2076-393X
    ISSN 2076-393X
    DOI 10.3390/vaccines9080916
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Analysis of accumulated SARS-CoV-2 seroconversion in North Carolina: The COVID-19 Community Research Partnership.

    Williamson, John C / Wierzba, Thomas F / Santacatterina, Michele / Munawar, Iqra / Seals, Austin L / Pittman Ballard, Christine Ann / Alexander-Miller, Martha / Runyon, Michael S / McCurdy, Lewis H / Gibbs, Michael A / Ahmed, Amina / Lagarde, William H / Maguire, Patrick D / King-Thiele, Robin / Hamrick, Terri / Ihmeidan, Abdalla / Henderson, Shakira / Gallaher, T Ryan / Uschner, Diane /
    Edelstein, Sharon L / Herrington, David M / Sanders, John W

    PloS one

    2022  Volume 17, Issue 3, Page(s) e0260574

    Abstract: Introduction: The COVID-19 Community Research Partnership is a population-based longitudinal syndromic and sero-surveillance study. The study includes over 17,000 participants from six healthcare systems in North Carolina who submitted over 49,000 ... ...

    Abstract Introduction: The COVID-19 Community Research Partnership is a population-based longitudinal syndromic and sero-surveillance study. The study includes over 17,000 participants from six healthcare systems in North Carolina who submitted over 49,000 serology results. The purpose of this study is to use these serology data to estimate the cumulative proportion of the North Carolina population that has either been infected with SARS-CoV-2 or developed a measurable humoral response to vaccination.
    Methods: Adult community residents were invited to participate in the study between April 2020 and February 2021. Demographic information was collected and daily symptom screen was completed using a secure, HIPAA-compliant, online portal. A portion of participants were mailed kits containing a lateral flow assay to be used in-home to test for presence of anti-SARS-CoV-2 IgM or IgG antibodies. The cumulative proportion of participants who tested positive at least once during the study was estimated. A standard Cox proportional hazards model was constructed to illustrate the probability of seroconversion over time up to December 20, 2020 (before vaccines available). A separate analysis was performed to describe the influence of vaccines through February 15, 2021.
    Results: 17,688 participants contributed at least one serology result. 68.7% of the population were female, and 72.2% were between 18 and 59 years of age. The average number of serology results submitted per participant was 3.0 (±1.9). By December 20, 2020, the overall probability of seropositivity in the CCRP population was 32.6%. By February 15, 2021 the probability among healthcare workers and non-healthcare workers was 83% and 49%, respectively. An inflection upward in the probability of seropositivity was demonstrated around the end of December, suggesting an influence of vaccinations, especially for healthcare workers. Among healthcare workers, those in the oldest age category (60+ years) were 38% less likely to have seroconverted by February 15, 2021.
    Conclusions: Results of this study suggest more North Carolina residents may have been infected with SARS-CoV-2 than the number of documented cases as determined by positive RNA or antigen tests. The influence of vaccinations on seropositivity among North Carolina residents is also demonstrated. Additional research is needed to fully characterize the impact of seropositivity on immunity and the ultimate course of the pandemic.
    MeSH term(s) Adult ; Age Factors ; Antibodies, Viral/analysis ; COVID-19/epidemiology ; Community Participation ; Female ; Health Personnel/statistics & numerical data ; Humans ; Longitudinal Studies ; Male ; Middle Aged ; North Carolina/epidemiology ; SARS-CoV-2/immunology ; Seroconversion ; Young Adult
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2022-03-18
    Publishing country United States
    Document type Journal Article ; Multicenter Study ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0260574
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Breakthrough SARS-CoV-2 Infections after Vaccination in North Carolina.

    Uschner, Diane / Bott, Matthew / Lagarde, William H / Keating, Joseph / Tapp, Hazel / Berry, Andrea A / Seals, Austin L / Munawar, Iqra / Schieffelin, John / Yukich, Joshua / Santacatterina, Michele / Gunaratne, Mihili / Fette, Lida M / Burke, Brian / Strylewicz, Greg / Edelstein, Sharon L / Ahmed, Amina / Miller, Kristen / Sanders, John W /
    Herrington, David / Weintraub, William S / Runyon, Michael S / On Behalf Of The Covid-Community Research Partnership

    Vaccines

    2022  Volume 10, Issue 11

    Abstract: We characterize the overall incidence and risk factors for breakthrough infection among fully vaccinated participants in the North Carolina COVID-19 Community Research Partnership cohort. Among 15,808 eligible participants, 638 reported a positive SARS- ... ...

    Abstract We characterize the overall incidence and risk factors for breakthrough infection among fully vaccinated participants in the North Carolina COVID-19 Community Research Partnership cohort. Among 15,808 eligible participants, 638 reported a positive SARS-CoV-2 test after vaccination. Factors associated with a lower risk of breakthrough in the time-to-event analysis included older age, prior SARS-CovV-2 infection, higher rates of face mask use, and receipt of a booster vaccination. Higher rates of breakthrough were reported by participants vaccinated with BNT162b2 or Ad26.COV2.S compared to mRNA-1273, in suburban or rural counties compared to urban counties, and during circulation of the Delta and Omicron variants.
    Language English
    Publishing date 2022-11-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2703319-3
    ISSN 2076-393X
    ISSN 2076-393X
    DOI 10.3390/vaccines10111922
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Attitudes Toward The COVID-19 Vaccine Among North Carolina Participants In The COVID-19 Community Research Partnership

    Enwezor, Chukwunyelu / Peacock, James E. / Edelstein, Sharon L / Hinkelman, Amy N / Seals, Austin L / Wierzba, Thomas F / Munawar, Iqra / Runyon, Michael S / Magurie, Patrick D / Lagarde, William H / Gibbs, Michael A / Gallaher, Thomas R / Sanders, John W / herrington, david

    medRxiv

    Abstract: Willingness to receive the newly developed Coronavirus Disease-2019 (COVID-19) vaccines is highly variable. To assess the receptiveness of a select sample of North Carolinians to COVID-19 vaccination, a brief survey was conducted among participants in ... ...

    Abstract Willingness to receive the newly developed Coronavirus Disease-2019 (COVID-19) vaccines is highly variable. To assess the receptiveness of a select sample of North Carolinians to COVID-19 vaccination, a brief survey was conducted among participants in the COVID-19 Community Research Partnership (CCRP) affiliated with five medical centers in North Carolina. A total of 20,232 CCRP participants completed a multiple choice, mini survey electronically between December 17, 2020 and January 13, 2021. Of the 20,232 survey respondents, 15,422 (76.2%) were receptive to vaccination. Vaccine receptiveness increased incrementally with age with those >70 years being the most willing to be vaccinated compared to all other age groups. Respondents with no previous COVID-19 diagnosis were more likely to accept the vaccine compared to those that have a previous COVID-19 diagnosis (76.6% vs 60.9%). Comparative analysis of gender, race/ethnicity, and residence locale revealed that women, African Americans, and suburban participants were less willing to get a COVID-19 vaccine. There was no difference in vaccine intent based on healthcare worker status. Of those unwilling to get the vaccine, 82% indicated that the reason was uncertainty about the safety and efficacy of the vaccine.
    Keywords covid19
    Language English
    Publishing date 2021-05-24
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2021.05.20.21257343
    Database COVID19

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  9. Article ; Online: Breakthrough SARS-CoV-2 Infections after Vaccination in North Carolina

    Uschner, Diane / Bott, Matthew / Santacatterina, Michele / Gunaratne, Mihili P / Fette, Lida / Burke, Brian K / Strylewicz, Greg / Edelstein, Sharon L / Lagarde, William H / Miller, Kristen E / Weintraub, William S / Yukich, Joshua / Tapp, Hazel / Schieffelin, John / Ahmed, Amina / Berry, Andrea A / Munawar, Iqra / Seals, Austin L / Williamson, John /
    Herrington, David / Sanders, John W / Runyon, Michael / COVID-19 Community Research Partnership

    medRxiv

    Abstract: Importance: Real-world data are needed to assess incidence and factors associated with breakthrough SARS-CoV-2 infections following vaccination. Objective: Estimate incidence of breakthrough infections and assess associations with risk factors using self- ...

    Abstract Importance: Real-world data are needed to assess incidence and factors associated with breakthrough SARS-CoV-2 infections following vaccination. Objective: Estimate incidence of breakthrough infections and assess associations with risk factors using self-reported data from a large NC population sample. Design: Prospective observational cohort study utilizing daily online survey data to capture information about COVID-19 symptoms, testing, and vaccination status. Setting: Six health care systems in North Carolina with data collected between January 15, 2021 and September 24, 2021. Participants: Adult study participants who reported full vaccination with a COVID-19 mRNA or J&J non-replicating viral vector vaccine (n = 16,020). Exposures: Potential community exposure to SARS-CoV-2. Main Outcome and Measures: Self-reported breakthrough infection. Results: SARS-CoV-2 infection after vaccination was self-reported in 1.9% of participants, with an incidence rate of 7.3 per 100,000 person-years. Younger age (45-64 vs. 18-44: HR (95% CI) = 0.65 (0.51-0.82); 65+ vs. 18-44: HR (95% CI) = 0.59 (0.39-0.90)), and vaccination with J&J Ad26.COV2.S were associated with a higher risk of breakthrough infection compared to vaccination with Pfizer BNT162b2 (Ad26.COV2.S vs. BNT162b2: HR (95% CI) = 2.23 (1.40-3.56)), while participants vaccinated with mRNA-1273 (mRNA-1273 vs. BNT162b2: HR (95% CI) = 0.69 (0.50-0.96) and those residing in urban counties experienced a lower rate of SARS-CoV-2 breakthrough infection compared with those from suburban (HR (95% CI) = 1.39 (1.01-1.90)) or rural (HR (95% CI) = 1.57 (1.16-2.11)) counties. There was no significant association between breakthrough infection and participant sex, race, healthcare worker status, prior COVID-19 infection, routine mask use, or overall vaccination rate in the county of residence. Conclusions and Relevance: This NC community-based observational study showed that the proportion of the cohort who self-report breakthrough SARS-CoV-2 infections was 7.3 events per 100,000 person-years. Younger adults, those vaccinated with J&J Ad26.COV2.S, and those residing in suburban or rural counties were at higher risk of breakthrough infections and should be targeted for additional risk mitigation strategies to decrease community transmission.
    Keywords covid19
    Language English
    Publishing date 2021-10-13
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2021.10.10.21264812
    Database COVID19

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  10. Article ; Online: Analysis of Accumulated SARS-CoV-2 Seroconversion in North Carolina: The COVID-19 Community Research Partnership

    Williamson, John C / Wierzba, Thomas F / Santacatterina, Michele / Munawar, Iqra / Seals, Austin L / Pittman Ballard, Christine Ann / Alexander-Miller, Martha / Runyon, Michael S / McCurdy, Lewis H / Gibbs, Michael A / Ahmed, Amina / Lagarde, William H / Maguire, Patrick D / King-Thiele, Robin / Hamrick, Terri / Ihmeidan, Abdalla / Henderson, Shakira / Uschner, Diane / Herrington, David M /
    Sanders, John W

    medRxiv

    Abstract: Introduction The COVID-19 Community Research Partnership is a population-based longitudinal syndromic and sero-surveillance study. The study includes over 17,000 participants from six healthcare systems in North Carolina who submitted over 49,000 ... ...

    Abstract Introduction The COVID-19 Community Research Partnership is a population-based longitudinal syndromic and sero-surveillance study. The study includes over 17,000 participants from six healthcare systems in North Carolina who submitted over 49,000 serology results. The purpose of this study is to use these serology data to estimate the cumulative proportion of the North Carolina population that has either been infected with SARS-CoV-2 or developed a measurable humoral response to vaccination. Methods Adult community residents were invited to participate in the study between April 2020 and February 2021. Demographic information was collected and daily symptom screen was completed using a secure, HIPPA-compliant, online portal. A portion of participants were mailed kits containing a lateral flow assay to be used in-home to test for presence of anti-SARS-CoV-2 IgM or IgG antibodies. The cumulative proportion of participants who tested positive at least once during the study was calculated. A standard Cox proportional hazards model was constructed to illustrate the probability of seroconversion over time up to December 20, 2020 (before vaccines available). A separate analysis was performed to describe the influence of vaccines during an extended period through February 15, 2021. Results 17,688 participants contributed at least one serology result. Approximately two-thirds of the population were female and almost three-quarters were between 30 and 64 years of age. The average number of serology test results submitted per participant was 3.0 (±1.9). At December 20, 2020, the overall probability of seropositivity in the CCRP population was 32.6%. At February 15, 2021 the probability among healthcare workers and non-healthcare workers was 49% and 83%, respectively. An inflection upward in the probability of seropositivity was demonstrated around the end of December, suggesting an influence of vaccinations, especially for healthcare workers. Among healthcare workers, those in the oldest age category (60+ years) were 38% less likely to have seroconverted by February 15, 2021. Conclusions Results of this study suggest more North Carolina residents may have been infected with SARS-CoV-2 than the number of documented cases as determined by positive RNA or antigen tests. The influence of vaccinations on seropositivity among North Carolina residents is also demonstrated. Additional research is needed to fully characterize the impact of seropositivity on immunity and the ultimate course of the pandemic.
    Keywords covid19
    Language English
    Publishing date 2021-03-12
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2021.03.11.21253226
    Database COVID19

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