Omicron Variant Much less Probably To Trigger Lengthy COVID
The SARS-CoV-2 Omicron variant is much less more likely to trigger lengthy COVID than the Delta variant, new analysis has discovered.
Evaluation by researchers from King’s Faculty London of knowledge from the ZOE COVID Symptom examine app is revealed right this moment (June 18, 2022) in a letter to the medical journal The Lancet. The findings are from the primary peer-reviewed examine to report on lengthy COVID threat and the Omicron variant.
Lengthy COVID is outlined by NICE pointers as having new or ongoing signs 4 weeks or extra after the beginning of the illness. Signs embody fatigue, shortness of breath, lack of focus, and joint ache. The signs can adversely have an effect on day-to-day actions, and in some circumstances will be severely limiting.
Researchers discovered the chances of experiencing lengthy COVID have been between 20-50% much less throughout the Omicron interval versus the Delta interval, relying on age and time since vaccination.
The examine recognized 56,003 UK grownup circumstances first testing constructive between December 20, 2021, and March 9, 2022, when Omicron was the dominant pressure. Researchers in contrast these circumstances to 41,361 circumstances first testing constructive between June 1, 2021, and November 27, 2021, when the Delta variant was dominant.
The evaluation exhibits 4.4% of Omicron circumstances have been lengthy COVID, in comparison with 10.8% of Delta circumstances. Nonetheless, absolutely the variety of folks experiencing lengthy COVID was actually increased within the Omicron interval. This was due to the huge variety of folks contaminated with Omicron from December 2021 to February 2022. The UK Workplace of Nationwide Statistics estimated the variety of folks with lengthy COVID really elevated from 1.3 million in January 2022 to 2 million as of Might 1st, 2022.
Lead writer, Dr. Claire Steves from King’s Faculty London, mentioned: “The Omicron variant seems considerably much less more likely to trigger Lengthy-COVID than earlier variants however nonetheless 1 in 23 individuals who catch COVID-19 go on to have signs for greater than 4 weeks. Given the numbers of individuals affected it’s vital that we proceed to assist them at work, at dwelling and inside the NHS.”
Reference: “Danger of lengthy COVID related to delta versus omicron variants of SARS-CoV-2” by Michela Antonelli, Joan Capdevila Pujol, Tim D Spector, Sebastien Ourselin and Claire J Steves, 18 June 2022, The Lancet.