DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Impacts of Vaccination and Severe Acute Respiratory Syndrome Coronavirus 2 Variants Alpha and Delta on Coronavirus Disease 2019 Transmission Dynamics in Four Metropolitan Areas of the United States

Journal Article · · Bulletin of Mathematical Biology

To characterize Coronavirus Disease 2019 (COVID-19) transmission dynamics in each of the metropolitan statistical areas (MSAs) surrounding Dallas, Houston, New York City, and Phoenix in 2020 and 2021, we extended a previously reported compartmental model accounting for effects of multiple distinct periods of non-pharmaceutical interventions by adding consideration of vaccination and Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) variants Alpha (lineage B.1.1.7) and Delta (lineage B.1.617.2). For each MSA, we found region-specific parameterizations of the model using daily reports of new COVID-19 cases available from January 21, 2020 to October 31, 2021. In the process, we obtained estimates of the relative infectiousness of Alpha and Delta as well as their takeoff times in each MSA (the times at which sustained transmission began). The estimated infectiousness of Alpha ranged from 1.1x to 1.4x that of viral strains circulating in 2020 and early 2021. The estimated relative infectiousness of Delta was higher in all cases, ranging from 1.6x to 2.1x. The estimated Alpha takeoff times ranged from February 1 to February 28, 2021. The estimated Delta takeoff times ranged from June 2 to June 26, 2021. In conclusion, estimated takeoff times are consistent with genomic surveillance data.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2467364
Report Number(s):
LA-UR--23-20477
Journal Information:
Bulletin of Mathematical Biology, Journal Name: Bulletin of Mathematical Biology Journal Issue: 3 Vol. 86; ISSN 0092-8240
Publisher:
Society for Mathematical Biology - SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

A tutorial on adaptive MCMC journal December 2008
Past SARS-CoV-2 infection protection against re-infection: a systematic review and meta-analysis journal March 2023
Emergence and rapid transmission of SARS-CoV-2 B.1.1.7 in the United States journal May 2021
Differential contagiousness of respiratory disease across the United States journal December 2023
Mathematical modeling for Delta and Omicron variant of SARS-CoV-2 transmission dynamics in Greece journal September 2023
Effectiveness of non-pharmaceutical interventions on COVID-19 transmission in 190 countries from 23 January to 13 April 2020 journal January 2021
Longitudinal determination of BNT162b2 vaccine induced strongly binding SARS-CoV-2 IgG antibodies in a cohort of Romanian healthcare workers journal September 2022
SARS-CoV-2 variant Delta rapidly displaced variant Alpha in the United States and led to higher viral loads journal March 2022
Comparative transmissibility of SARS-CoV-2 variants Delta and Alpha in New England, USA journal April 2022
Non-pharmaceutical interventions, vaccination, and the SARS-CoV-2 delta variant in England: a mathematical modelling study journal November 2021
SARS-CoV-2 vaccine breakthrough infections with the alpha variant are asymptomatic or mildly symptomatic among health care workers journal October 2021
Modelling the medium-term dynamics of SARS-CoV-2 transmission in England in the Omicron era journal August 2022
The effect of large-scale anti-contagion policies on the COVID-19 pandemic journal June 2020
Increased mortality in community-tested cases of SARS-CoV-2 lineage B.1.1.7 journal March 2021
Assessing transmissibility of SARS-CoV-2 lineage B.1.1.7 in England journal March 2021
BNT162b2 and mRNA-1273 COVID-19 vaccine effectiveness against the SARS-CoV-2 Delta variant in Qatar journal November 2021
Modeling transmission of SARS-CoV-2 Omicron in China journal May 2022
Early Evidence of the Effect of SARS-CoV-2 Vaccine at One Medical Center journal May 2021
Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant journal August 2021
Implementation of a practical Markov chain Monte Carlo sampling algorithm in PyBioNetFit journal January 2022
Household Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Alpha Variant—United States, 2021 journal February 2022
Estimated transmissibility and impact of SARS-CoV-2 lineage B.1.1.7 in England journal March 2021
The Alpha Variant (B.1.1.7) of SARS-CoV-2 Failed to Become Dominant in Mexico journal April 2022
An Analysis of COVID-19 Mortality During the Dominancy of Alpha, Delta, and Omicron in the USA journal January 2023
Introduction and transmission of SARS-CoV-2 lineage B.1.1.7, Alpha variant, in Denmark journal May 2022
Revisiting the Gelman–Rubin Diagnostic journal November 2021
Estimation of the basic reproduction number of Alpha and Delta variants of COVID-19 pandemic in Iran journal May 2022
Strong Social Distancing Measures In The United States Reduced The COVID-19 Growth Rate: Study evaluates the impact of social distancing measures on the growth rate of confirmed COVID-19 cases across the United States. journal July 2020
The Advisory Committee on Immunization Practices’ Interim Recommendation for Use of Pfizer-BioNTech COVID-19 Vaccine — United States, December 2020 journal December 2020
The Advisory Committee on Immunization Practices’ Interim Recommendation for Use of Moderna COVID-19 Vaccine — United States, December 2020 journal January 2021
Emergence of SARS-CoV-2 B.1.1.7 Lineage — United States, December 29, 2020–January 12, 2021 journal January 2021
Interim Estimates of Vaccine Effectiveness of BNT162b2 and mRNA-1273 COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Health Care Personnel, First Responders, and Other Essential and Frontline Workers — Eight U.S. Locations, December 2020–March 2021 journal April 2021
Rapid Increase in Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant — Mesa County, Colorado, April–June 2021 journal August 2021
Predicted dominance of variant Delta of SARS-CoV-2 before Tokyo Olympic Games, Japan, July 2021 journal July 2021
Increased transmissibility and global spread of SARS-CoV-2 variants of concern as at June 2021 journal June 2021
Evaluating the Effectiveness of Social Distancing Interventions to Delay or Flatten the Epidemic Curve of Coronavirus Disease journal August 2020
Daily Forecasting of Regional Epidemics of Coronavirus Disease with Bayesian Uncertainty Quantification, United States journal January 2021
Estimating Relative Abundance of 2 SARS-CoV-2 Variants through Wastewater Surveillance at 2 Large Metropolitan Sites, United States journal May 2022
From Alpha to Omicron: How Different Variants of Concern of the SARS-Coronavirus-2 Impacted the World journal September 2023
Is the Increased Transmissibility of SARS-CoV-2 Variants Driven by within or Outside-Host Processes? journal September 2022
Bayesian Inference of State-Level COVID-19 Basic Reproduction Numbers across the United States journal January 2022