In Denmark, Omicron reinfections reveal ineffective post-COVID-19 immunity

  • 📰 NewsMedical
  • ⏱ Reading Time:
  • 35 sec. here
  • 2 min. at publisher
  • 📊 Quality Score:
  • News: 17%
  • Publisher: 71%

United Kingdom Headlines News

United Kingdom Latest News,United Kingdom Headlines

In Denmark, Omicron reinfections reveal ineffective post-COVID-19 immunity Denmark immunity Omicron Coronavirus Disease COVID HerdImmunity medrxivpreprint cwru TAMU StanfordMed ColumbiaMed

The evolution of SARS-CoV-2 has led to the emergence of multiple variants of concern with increased transmissibility and immune-evasiveness such as Omicron, leading to an upsurge of SARS-CoV-2 reinfections and difficulties in COVID-19 mitigation globally. Studies have investigated SARS-CoV-2 reinfection frequencies but were restricted to reverse transcriptase polymer chain reaction analysis data, in which SARS-CoV-2 Pango lineages are not specified.

NGS data and clinical metadata of primary SARS-CoV-2 infections and reinfections from the same individual residing in Denmark were analyzed. In total, 21,708 entries of reinfections were available between 1 March 2020 and 28 August 2022, with data on the dates of sample collection about primary SARS-CoV-2 infections and reinfections.

Reinfection frequency was significantly higher with Omicron after primary infections with any VOC. No Alpha VOC-induced reinfection cases were reported, whereas Delta VOC caused reinfections in 2.3% of cases. Pre-Omicron estimates of natural infection-induced immunity were above 90%, which dropped to below 10% in three to four months.


Thank you for your comment. Your comment will be published after being reviewed.
Please try again later.
We have summarized this news so that you can read it quickly. If you are interested in the news, you can read the full text here. Read more:

 /  🏆 19. in UK

United Kingdom Latest News, United Kingdom Headlines

Similar News:You can also read news stories similar to this one that we have collected from other news sources.