tetano
Editor, Senior Moderator
Vaccines (Basel)
. 2022 May 11;10(5):755.
doi: 10.3390/vaccines10050755.
Breakthrough COVID-19 Infections in the US: Implications for Prolonging the Pandemic
Donald J Alcendor[SUP] 1 2 [/SUP], Patricia Matthews-Juarez[SUP] 3 [/SUP], Duane Smoot[SUP] 4 [/SUP], James E K Hildreth[SUP] 1 2 4 [/SUP], Kimberly Lamar[SUP] 5 [/SUP], Mohammad Tabatabai[SUP] 6 [/SUP], Derek Wilus[SUP] 6 [/SUP], Paul D Juarez[SUP] 3 [/SUP]
Affiliations
Abstract
The incidence of COVID-19 breakthrough infections-an infection that occurs after you have been vaccinated-has increased in frequency since the Delta and now Omicron variants of the SARS-CoV-2 coronavirus have become the dominant strains transmitted in the United States (US). Evidence suggests that individuals with breakthrough infections, though rare and expected, may readily transmit COVID-19 to unvaccinated populations, posing a continuing threat to the unvaccinated. Here, we examine factors contributing to breakthrough infections including a poor immune response to the vaccines due to the fact of advanced age and underlying comorbidities, the natural waning of immune protection from the vaccines over time, and viral variants that escape existing immune protection from the vaccines. The rise in breakthrough infections in the US and how they contribute to new infections, specifically among the unvaccinated and individuals with compromised immune systems, will create the need for additional booster vaccinations or development of modified vaccines that directly target current variants circulating among the general population. The need to expedite vaccination among the more than 49.8 million unvaccinated eligible people in the US is critical.
Keywords: COVID-19; Delta variant; Omicron variant; SARS-CoV-2; breakthrough infections; coronavirus; vaccine.
. 2022 May 11;10(5):755.
doi: 10.3390/vaccines10050755.
Breakthrough COVID-19 Infections in the US: Implications for Prolonging the Pandemic
Donald J Alcendor[SUP] 1 2 [/SUP], Patricia Matthews-Juarez[SUP] 3 [/SUP], Duane Smoot[SUP] 4 [/SUP], James E K Hildreth[SUP] 1 2 4 [/SUP], Kimberly Lamar[SUP] 5 [/SUP], Mohammad Tabatabai[SUP] 6 [/SUP], Derek Wilus[SUP] 6 [/SUP], Paul D Juarez[SUP] 3 [/SUP]
Affiliations
- PMID: 35632512
- DOI: 10.3390/vaccines10050755
Abstract
The incidence of COVID-19 breakthrough infections-an infection that occurs after you have been vaccinated-has increased in frequency since the Delta and now Omicron variants of the SARS-CoV-2 coronavirus have become the dominant strains transmitted in the United States (US). Evidence suggests that individuals with breakthrough infections, though rare and expected, may readily transmit COVID-19 to unvaccinated populations, posing a continuing threat to the unvaccinated. Here, we examine factors contributing to breakthrough infections including a poor immune response to the vaccines due to the fact of advanced age and underlying comorbidities, the natural waning of immune protection from the vaccines over time, and viral variants that escape existing immune protection from the vaccines. The rise in breakthrough infections in the US and how they contribute to new infections, specifically among the unvaccinated and individuals with compromised immune systems, will create the need for additional booster vaccinations or development of modified vaccines that directly target current variants circulating among the general population. The need to expedite vaccination among the more than 49.8 million unvaccinated eligible people in the US is critical.
Keywords: COVID-19; Delta variant; Omicron variant; SARS-CoV-2; breakthrough infections; coronavirus; vaccine.