A study published in The Lancet journal finds that people who have received a booster dosage are more likely to recover from Omicron three days sooner than those who have contracted Delta.
The study, performed by a team from King's College London, found that persons infected with Omicron had much shorter symptoms than those infected with the Delta variant (6.87 days versus 8.89 days) and were less likely to be hospitalised.
In vaccinated people, symptoms linked with an Omicron infection involve the lungs less and last shorter time, according to the researchers, and this is especially true in people who have received three doses.
In contrast to Delta, which mostly impacted the lower respiratory system or the lungs, Omicron demonstrated a predominance of viral replication in the upper respiratory tract or in the nose, resulting in severe sickness, hospitalisation, and death.
"In participants infected during Omicron prevalence compared to those infected during Delta prevalence, a third dose of vaccination was linked with a higher reduction in symptom duration," writes Dr Cristina Menni of King's Department of Twin Research and Genetic Epidemiology in the research.
To learn more, the researchers used the ZOE COVID Study App to examine the symptoms of 62,002 vaccinated persons in the UK who tested positive between June 1, 2021 and November 27, 2021, when Delta was dominant, and December 22, 2021 to January 17, 2022, when Omicron was dominant.
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