The Omicron COVID-19 variant was found to be 105% more transmissible than Delta. The results showed that tests consistent with the presence of the Omicron variant exhibit significantly higher cycle threshold Ct values
The Omicron COVID-19 variant was found to be 105% more transmissible than Delta, according to research by French scientists. The study, published on the medRxiv site and yet to be peer-reviewed, analyzed 131,478 tests in France from October 25 to December 18, 2021.
‘Omicron was designated a variant "of concern" by the World Health Organization (WHO) in November. Since then it has been detected in more than 100 countries.’
The team applied statistical models to variant-specific screening tests and full genome sequencing. They compared the number of infections with the Omicron, Alpha, and Delta variants over 21 days.
The difference in the rate of transmissibility in people with the Delta and Omicron was approximately 105 percent.
"We estimate that the transmission advantage of the Omicron variant over the Delta variant is more than 105 percent," said Samuel Alizon, from Centre for Interdisciplinary Research in Biology (CIRB) France.
Further, the results showed that tests consistent with the presence of the Omicron variant exhibit significantly higher cycle threshold Ct values, which could indicate lower amounts of virus genetic material.
Advertisement
The results also showed that in young people, the prevalence of infection with the Omicron variant or the Alpha variant was higher than that of the Delta variant.
Advertisement
However, earlier this week, the WHO warned against describing the Omicron variant as "mild" amid a "tsunami of cases" overwhelming health systems across the world.
"Just like previous variants, Omicron is hospitalizing people and killing people," Tedros Adhanom Ghebreyesus, Director-General of the WHO, said last week.
"Hospitals are becoming overcrowded and understaffed, which further results in preventable deaths from not only COVID-19 but other diseases and injuries where patients cannot receive timely care".
Source-IANS