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Global COVID-19 infections hit a record high over the past seven-day period as the Omicron variant raced out of control, keeping workers at home and overwhelming testing centres.

Almost 900,000 cases were detected on average each day around the world between December 22 and 28, with myriad countries posting new all-time highs in the previous 24 hours, including France, the United States, Australia and many in Europe.

A man is tested for COVID-19 in downtown Miami this week.Credit:AP

Almost two years after China first alerted the World Health Organisation (WHO) to a cluster of “viral pneumonia” cases of unknown origin in the city of Wuhan, the regularly mutating coronavirus is still wreaking havoc, forcing numerous governments to rethink quarantine and testing rules.

Although some studies have suggested Omicron is less deadly than some previous variants, the huge numbers of people testing positive mean that hospitals in some countries might soon be overwhelmed, while businesses might struggle to carry on because of workers having to quarantine.

“Delta and Omicron are now twin threats driving up cases to record numbers, leading to spikes in hospitalisation and deaths,” WHO director-general Tedros Adhanom Tedros said.

“I am highly concerned that Omicron, being highly transmissible and spreading at the same time as Delta, is leading to a tsunami of cases.”

French Health Minister Olivier Veran said France was seeing a “dizzying” rise in cases, with 208,000 reported in the space of 24 hours – a national and European record.

‘Gear change’ needed

Britain, Italy, Spain, Portugal, Greece, Cyprus and Malta all registered record numbers of new cases on Tuesday, while the seven-day average number of new daily cases in the United States hit a record 258,312, according to a Reuters tally on Wednesday. The previous peak was 250,141, registered last January.

US Centres for Disease Control and Prevention Director Rochelle Walensky said she expected many more US cases.

British Prime Minister Boris Johnson said 90 per cent of patients ending up in intensive care had not received booster vaccines, which medics say is the best protection against Omicron.

“You’re seeing cases rising in hospitals, but it is obviously milder than the Delta variant,” Johnson said.

A hand sanitising station on Oxford Street in London this week.Credit:Getty Images

In Spain, demand for free testing kits from the Madrid regional government far outstripped supply, with long queues forming outside pharmacies.

Early data from Britain, South Africa and Denmark suggests the risk of hospitalisation from Omicron is lower than from Delta, the WHO said in its latest epidemiological report.

However, the WHO’s top emergencies expert, Mike Ryan, said it was too soon to draw definitive conclusions because Omicron was so far circulating largely among younger, less vulnerable age groups.

“What we haven’t seen is the Omicron wave fully established in the broader population,” he said.

‘I just want to go home’

A number of governments were also increasingly worried by the huge numbers being forced into self-isolation because they had been in contact with a coronavirus sufferer.

Italy was expected to relax some quarantine rules on Wednesday, worried about grinding to a halt because of the number in precautionary self-isolation. Cases there doubled within a day to 78,313 on Wednesday.

However, China stuck to its policy of zero tolerance, keeping 13 million people in Xian under rigid lockdown for a seventh day as 151 new cases were reported on Tuesday, albeit none with Omicron so far.

“I just want to go home,” said a 32-year-old mechanic who was in the city on business last week when it was effectively shut off from the outside world.

The surge in cases coincides with many countries’ New Year holidays, normally a period of parties and travel. Some countries, such as Italy, have cancelled public celebrations, while authorities in Japan urged residents to keep New Year gatherings small.

“The highest risk is meeting people without taking adequate measures to prevent infection,” said Norio Ohmagari, director of the Disease Control and Prevention Centre.

Reuters

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