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Get vaccinated, if you're not already vaccinated. get boosted. >> reporter: hospitalizations and deaths were already predicted to increase after a recent surge in cases before omicron was detected. the delta variant still accounts for more than 99% of cases worldwide. now labs across the country are sequencing approximately 80,000 p.c.r. tests a week to see where omicron might show cbs' david begnaud was given access to a new york city lab sequencing about 2,000 of those test samples. >> reporter: how long did it take for delta to become the majority of all covid-positive patients in new york ...

>> what we're doing is taking some proportionate precautionary measures while our scientists crack the omicron code. >> reporter: in england, on tuesday, face masks became mandatory again in stores and on public transportation. israel confirmed its first cases of omicron community spread. this medical center said a doctor who traveled abroad and then infected a colleague. in the netherlands, where some are already isolating in this airport hotel, the government said the omicron variant was in the country a full week earlier than it originally thought, found in test samples from november 19th t...

Found in test samples from november 19th that were just sequenced. japan found its first omicron variant case. a man who traveled from namibia. its borders closed to all foreigners on tuesday. south african leaders are slamming those global travel banns as ineffective and punitive. >> we feel that the travel ban is very unfair. south african science should be commended for discovering this new variant and sharing the information with the world. we have played our role very responsibly. >> reporter: one disturbing impact of the travel restrictions is that scientists are telling me they're strug...

Have said if it's not here yet, it's inevitable it will be here at some point. and this effort includes ramping up surveillance at airports. where those travelers are often coming in. and there are four major airports across the united states where they are doing that tonight. newark, of course, in new jersey, jfk in new york, atlanta and san francisco as well. all of these airports and the cdc director said today they are sequencing these test samples. that's a way to figure out where this virus, this variant is. >> we have increased our genomic sequencing capability and we are now sequencing...

This is bbc news i'm christian fraser. the new covid—19 variant was in europe earlier than previously thought. test samples show cases of omicron were present in the netherlands 11 days before the variant was first identified by south africa. the first of four victims gives evidence against ghillaine maxwell in new york. the woman known only as jane says she was groomed at the age of 1a. the head of britain's security agency mi6 has warns the chinese are conducting large—scale spying operations against the uk and its allies. and barbados has spent its first day as a republic — with a pre...