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The role of vaccine status homophily in the COVID-19 pandemic: a cross-sectional survey with modelling.
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- Author(s): Are EB;Are EB;Are EB; Card KG; Card KG; Card KG; Card KG; Colijn C; Colijn C; Colijn C
- Source:
BMC public health [BMC Public Health] 2024 Feb 14; Vol. 24 (1), pp. 472. Date of Electronic Publication: 2024 Feb 14.- Publication Type:
Journal Article- Language:
English - Source:
- Additional Information
- Source: Publisher: BioMed Central Country of Publication: England NLM ID: 100968562 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2458 (Electronic) Linking ISSN: 14712458 NLM ISO Abbreviation: BMC Public Health Subsets: MEDLINE
- Publication Information: Original Publication: London : BioMed Central, [2001-
- Subject Terms:
- Abstract: Background: Vaccine homophily describes non-heterogeneous vaccine uptake within contact networks. This study was performed to determine observable patterns of vaccine homophily, as well as the impact of vaccine homophily on disease transmission within and between vaccination groups under conditions of high and low vaccine efficacy.
Methods: Residents of British Columbia, Canada, aged ≥ 16 years, were recruited via online advertisements between February and March 2022, and provided information about vaccination status, perceived vaccination status of household and non-household contacts, compliance with COVID-19 prevention guidelines, and history of COVID-19. A deterministic mathematical model was used to assess transmission dynamics between vaccine status groups under conditions of high and low vaccine efficacy.
Results: Vaccine homophily was observed among those with 0, 2, or 3 doses of the vaccine. Greater homophily was observed among those who had more doses of the vaccine (p < 0.0001). Those with fewer vaccine doses had larger contact networks (p < 0.0001), were more likely to report prior COVID-19 (p < 0.0001), and reported lower compliance with COVID-19 prevention guidelines (p < 0.0001). Mathematical modelling showed that vaccine homophily plays a considerable role in epidemic growth under conditions of high and low vaccine efficacy. Furthermore, vaccine homophily contributes to a high force of infection among unvaccinated individuals under conditions of high vaccine efficacy, as well as to an elevated force of infection from unvaccinated to suboptimally vaccinated individuals under conditions of low vaccine efficacy.
Interpretation: The uneven uptake of COVID-19 vaccines and the nature of the contact network in the population play important roles in shaping COVID-19 transmission dynamics.
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Vaccines (Basel). 2021 Jun 05;9(6):. (PMID: 34198885) - Contributed Indexing: Keywords: COVID-19; Contact network; Homophily; Mathematical model; Transmission; Vaccine
- Accession Number: 0 (COVID-19 Vaccines)
- Publication Date: Date Created: 20240214 Date Completed: 20240216 Latest Revision: 20240217
- Publication Date: 20240217
- Accession Number: PMC10868109
- Accession Number: 10.1186/s12889-024-17957-5
- Accession Number: 38355444
- Source:
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