It forms clusters as it successfully spreads to people, and this gets noticed during genome sequencing. Only these successful sublineages make news which are given names like XD, XE etc.
Globally, BA.2 made up about 86 per cent of cases reported as updated on the open access database GISAID between February 16 and March 17, the agency said in a report this week.
The country also announced it will not lift more Covid restrictions amid rising infections "in several locations around the world", the Prime Minister's Office said in a statement.
Meanwhile, although BA.2 sequences are increasing in proportion relative to other Omicron sublineages, there is still a reported decline in overall cases globally.
Several countries have seen a decline in Omicron variant-led Covid surge. The decrease in cases has also led to lifting restrictions. Sweden, Denmark, and Norway have all lifted Covid restrictions as they look to reclassify the virus as a disease that does not pose a threat to society. The UK and the US are soon likely to follow.
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Deltacron as first reported from Cyprus last month, but was later dismissed and put down to sample contamination.
The researchers noted that vaccination, including a booster dose for those who are fully vaccinated, remains critical for mitigating the risk of severe illness associated with SARS-CoV-2 infection.
The Ministry of Health continues to provide technical guidance for managing various aspects of COVID-19 including containment and surveillance, testing, clinical management protocols, post-COVID sequale, etc., the minister said.
Chief Minister Naveen Patnaik advised the rapid response teams (RRTs) and field staff to keep a track on the health condition of those patients who are in home quarantine.
About the prevalence of the Omicron variant of coronavirus in India, he said, 1,292 cases of the latest variant of concern were found on genome sequencing in December which rose to 9,672 in January.
However, the study has a limitation of lesser participants in the unvaccinated group and the shorter window period post infection. "This could be the important reason for the low immune response specifically in the unvaccinated individuals against Omicron," it said.
The Special Relief Commissioner of Odisha, PK Jena on Wednesday expressed optimism that the ongoing third wave of COVID pandemic in the State may soon wrap itself up but only if people abide by the appropriate virus infection prevention guidelines religiously at all places.
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