COVID-19 Delta Variant Still Appears to “Outcompete” Others: WHO experts

WHO Technical Lead for COVID-19, Dr. Maria Van Kerkhove

World Health Organisation (WHO) experts have warned that even with the emergence of the new Mu COVID-19 variant, the Delta strain remains the top concern globally, appearing to “outcompete” others, UN News revealed.

Speaking during an online question and answer session, the agency’s Technical Lead for COVID-19, Dr. Maria Van Kerkhove said, “I think the Delta variant for me is the one that’s most concerning because of the increased transmissibility. Delta continues to evolve and scientists are studying to see how the virus might be changing, with new variants continuing to emerge.”

She pointed out that the variant is doubly transmissible compared to the ancestral strain, which means that it can spread to more people.

Last week, WHO announced it was closely monitoring the Mu variant, also known as B.1621, which was first identified in Colombia in January 2021. It is among five “variants of interest” the agency is tracking at the global level.

Mu has a number of mutations that suggest it could be more resistant to vaccines, WHO said at the time, noting that further research will be needed.

Dr. Van Kerkhove reported that the proportion of Mu cases in South America is increasing, but numbers are decreasing in other countries where the Delta variant is circulating.

Dr. Michael Ryan, Head of WHO’s Health Emergencies Programme, explained that viruses essentially compete against each other. Currently Delta “tends to outcompete other variants”, he said.

While more COVID-19 variants are to be expected, “not every variant means the sky is going to fall in,” he added. “Each variant needs to be looked at for its characteristics in terms of its potential to cause more severe disease, its potential to transmit, its potential to escape vaccines.”

According to UN News, while cases have plateaued, some 4.5 million are reported each week, with deaths hovering around 68,000 weekly, and both numbers are underestimates.

Dr. Van Kerkhove said WHO is seeing “a lot of circulation among unvaccinated people” but there are also positive developments, including a reduction in hospitalizations and deaths among those who have been inoculated against the disease, UN News reports.

“But globally, it’s quite worrying. We shouldn’t be having this number of cases around the world, especially because we have the tools that really can prevent that from happening,” said Dr. Van Kerkhove.

She also highlighted that worldwide, the overall COVID-19 caseload is quite a worrying situation with devastating impacts.

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Byron Adonis Mutingwende