Race is on to trace new COVID-19 variant

LONDON/BRUSSELS/SINGAPORE — Governments around the world are urgently scouring databases for recent cases of COVID-19 infections, screening travellers and decoding the viral genomes of the new variant as they try to measure how far it has spread.

The pace of the work highlights the pressure on governments and public health authorities to decide quickly whether they need to take unpopular, economically damaging steps to curb Omicron's spread.

Data shows it was circulating before it was officially identified in southern Africa last week and it has since been detected in more than a dozen countries. Work to establish if it is more infectious, deadly or evades vaccines will take weeks.

Britain and other major economies banned flights to and from southern Africa just days after the variant was first detected, roiling global financial markets and stirring worries about the economic damage.

The speed of the action is in stark contrast to the emergence of other variants - when the first samples of the Alpha variant were documented in Britain in September 2020, the government spent months gathering data and assessing its potential danger before imposing a nationwide lockdown in December.

It took the World Health Organization (WHO) months to designate it a variant of concern — its highest level.

Soon after detecting its first Omicron case on Friday, Israel announced it would buy 10 million more PCR kits that can detect the variant in an effort to contain its spread. It shut its borders to foreigners from all countries on Saturday.

Scotland and Singapore are scrambling to check tens of thousands of recent positive cases for signs of the variant they may have missed and the United States is enhancing its COVID-19 surveillance to distinguish domestic cases of the Omicron variant from the still-dominant Delta.

The European Union's health commissioner has urged member states to boost efforts to detect mutations, as some still lag behind almost two years into the pandemic.