Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States

Emergence of antigenically diverse SARS-CoV-2 variants may be correlated with temporal circulation patterns. We analyzed positive SARS-CoV-2 tests in the United States reported to a national, laboratory-based surveillance network and unique amino acid sequences of the S1 region of the spike protein...

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Main Authors: Erica Billig Rose, Clinton R. Paden, Peter W. Cook, Kevin C. Ma, Amber Winn, Juan Castro, Lakshmi Panagiotakopoulos, Benjamin J. Silk
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2025-08-01
Series:Emerging Infectious Diseases
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Online Access:https://wwwnc.cdc.gov/eid/article/31/8/25-0451_article
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author Erica Billig Rose
Clinton R. Paden
Peter W. Cook
Kevin C. Ma
Amber Winn
Juan Castro
Lakshmi Panagiotakopoulos
Benjamin J. Silk
author_facet Erica Billig Rose
Clinton R. Paden
Peter W. Cook
Kevin C. Ma
Amber Winn
Juan Castro
Lakshmi Panagiotakopoulos
Benjamin J. Silk
author_sort Erica Billig Rose
collection DOAJ
description Emergence of antigenically diverse SARS-CoV-2 variants may be correlated with temporal circulation patterns. We analyzed positive SARS-CoV-2 tests in the United States reported to a national, laboratory-based surveillance network and unique amino acid sequences of the S1 region of the spike protein reported to national genomic surveillance during October 2020–September 2024. We estimated SARS-CoV-2 dominant periodicities using a discrete Fourier transform, described S1 variation using the Simpson diversity index (SDI), and estimated Spearman cross-correlation coefficients between percentage change in SDI and percentage positivity. SARS-CoV-2 activity consistently peaked during July–September and December–February, and dominant periodicities were at weeks 52.2 and 26.1. Percentage positivity and percentage change in SDI were negatively correlated (ρ = −0.30; p<0.001). SARS-CoV-2 peaks occurred in late summer and winter, a pattern likely related to rapid SARS-CoV-2 evolution and cyclical diversity. Monitoring associations between percentage positivity and SDI can help forecast expected surges and optimize prevention and preparedness.
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institution Kabale University
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1080-6059
language English
publishDate 2025-08-01
publisher Centers for Disease Control and Prevention
record_format Article
series Emerging Infectious Diseases
spelling doaj-art-3c4a58d7e64f4dc88347dc290e34a2ce2025-08-20T03:56:49ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592025-08-013181573157910.3201/eid3108.250451Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United StatesErica Billig RoseClinton R. PadenPeter W. CookKevin C. MaAmber WinnJuan CastroLakshmi PanagiotakopoulosBenjamin J. Silk Emergence of antigenically diverse SARS-CoV-2 variants may be correlated with temporal circulation patterns. We analyzed positive SARS-CoV-2 tests in the United States reported to a national, laboratory-based surveillance network and unique amino acid sequences of the S1 region of the spike protein reported to national genomic surveillance during October 2020–September 2024. We estimated SARS-CoV-2 dominant periodicities using a discrete Fourier transform, described S1 variation using the Simpson diversity index (SDI), and estimated Spearman cross-correlation coefficients between percentage change in SDI and percentage positivity. SARS-CoV-2 activity consistently peaked during July–September and December–February, and dominant periodicities were at weeks 52.2 and 26.1. Percentage positivity and percentage change in SDI were negatively correlated (ρ = −0.30; p<0.001). SARS-CoV-2 peaks occurred in late summer and winter, a pattern likely related to rapid SARS-CoV-2 evolution and cyclical diversity. Monitoring associations between percentage positivity and SDI can help forecast expected surges and optimize prevention and preparedness. https://wwwnc.cdc.gov/eid/article/31/8/25-0451_articleCOVID-19respiratory infectionssevere acute respiratory syndrome coronavirus 2SARS-CoV-2SARScoronavirus disease
spellingShingle Erica Billig Rose
Clinton R. Paden
Peter W. Cook
Kevin C. Ma
Amber Winn
Juan Castro
Lakshmi Panagiotakopoulos
Benjamin J. Silk
Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
Emerging Infectious Diseases
COVID-19
respiratory infections
severe acute respiratory syndrome coronavirus 2
SARS-CoV-2
SARS
coronavirus disease
title Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
title_full Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
title_fullStr Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
title_full_unstemmed Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
title_short Estimated COVID-19 Periodicity and Correlation with SARS-CoV-2 Spike Protein S1 Antigenic Diversity, United States
title_sort estimated covid 19 periodicity and correlation with sars cov 2 spike protein s1 antigenic diversity united states
topic COVID-19
respiratory infections
severe acute respiratory syndrome coronavirus 2
SARS-CoV-2
SARS
coronavirus disease
url https://wwwnc.cdc.gov/eid/article/31/8/25-0451_article
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