AI Article Synopsis
- A study analyzed over 323 million vaccine records to identify demographic factors related to delaying or missing the second dose of the mRNA COVID-19 vaccines (Pfizer-BioNTech and Moderna) in 2021.
- Findings showed that 87.3% received their second dose on time, while 3.4% had delays, and 9.4% missed it altogether.
- Groups at higher risk for delays or missed doses included racial/ethnic minorities, young adults (ages 18-39), individuals in socially vulnerable regions, and those outside the northeastern U.S., highlighting the need for targeted outreach to these populations.
Article Abstract
To identify demographic factors associated with delaying or not receiving a second dose of the 2-dose primary mRNA COVID-19 vaccine series, we matched 323 million single Pfizer-BioNTech (https://www.pfizer.com) and Moderna (https://www.modernatx.com) COVID-19 vaccine administration records from 2021 and determined whether second doses were delayed or missed. We used 2 sets of logistic regression models to examine associated factors. Overall, 87.3% of recipients received a timely second dose (≤42 days between first and second dose), 3.4% received a delayed second dose (>42 days between first and second dose), and 9.4% missed the second dose. Persons more likely to have delayed or missed the second dose belonged to several racial/ethnic minority groups, were 18-39 years of age, lived in more socially vulnerable areas, and lived in regions other than the northeastern United States. Logistic regression models identified specific subgroups for providing outreach and encouragement to receive subsequent doses on time.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9328898 | PMC |
| http://dx.doi.org/10.3201/eid2808.220557 | DOI Listing |
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