- AstraZeneca, Novavax say their shots protect from Omicron
- UK data suggests fewer hospitalisations than from Delta
- Don’t extrapolate from similar SAfrican data -African CDC
- WHO also urged caution about drawing firm conclusions
- Biden moves too little, too late for Omicron-experts
JOHANNESBURG/LONDON, Dec 23 (Reuters) – Two vaccine makers said their shots protected against Omicron as UK data suggested it may cause proportionally fewer hospital cases than the Delta coronavirus variant, though public health experts warned the battle against COVID-19 was far from over.
Similarly encouraging signs about hospitalisation rates emerged from South Africa on Wednesday, but the head of a leading African health agency joined the World Health Organization in cautioning that it was too soon to draw broad conclusions.
“Let’s be careful not to extrapolate what we are seeing in South Africa across the continent, or across the world,” Africa Centres for Disease Control (CDC) chief John Nkengasong told a media briefing.
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Coronavirus infections have soared wherever highly infectious Omicron has spread, triggering new restrictions in many countries.
First identified last month in southern Africa and Hong Kong, the variant is becoming dominant in much of Europe including Britain, where daily new infections have soared beyond 100,000.
In France, daily coronavirus cases – currently close to 90,000 – could rise into the hundreds of thousands in January, a scientific adviser to President Emmanuel Macron said on Thursday, while Germany reported its first Omicron death. read more
In Italy, the first Western country to be hit by the pandemic last year, the National Health Institute said Omicron would soon predominate, while Greece banned public Christmas festivities to curb its spread. Both countries also made outdoor mask-wearing mandatory. read more
But increases in hospitalisations and deaths in South Africa and Britain since Omicron took hold appear to have been only gradual, and AstraZeneca(AZN.L) and Novavax(NVAX.O) joined other vaccine manufacturers in saying their shots protect against it.
University of Edinburgh researchers who tracked 22,205 Omicron patients said on Wednesday the number who needed to be hospitalised was 68% lower than they would have expected, based on the rate in patients with Delta.
Imperial College London researchers reported evidence of a comparable 40%-45% reduction in hospitalisation risk.
Raghib Ali, senior clinical research associate at the University of Cambridge, said scientists had warned that, with the surge in UK cases, even a small proportion of hospitalisations could overwhelm the healthcare system.
However, the data was encouraging and “may help justify the government’s decision not to expand restrictions on social gathering over Christmas in England”, he said.
The UK data supported Wednesday’s findings from South Africa’s National Institute for Communicable Diseases (NICD). read more
A separate South African government-backed study, yet to be peer-reviewed, on health workers given the Johnson & Johnson (JNJ.N) vaccine identified “clear and early de-coupling” of hospitalisation from Omicron cases compared with Delta.
However, the CDC’s Nkengasong said the NICD data, suggesting Omicron was 70%-80% less severe than Delta, should be interpreted “with a lot of caution”.
“This is early days and public health practice is local,” he said, adding that particular factors such as the young median age of the South African population could be in play.
On Wednesday, the WHO’s technical lead on COVID-19, Maria van Kerkhove, said data on Omicron was still too “messy” to draw firm conclusions.
Case data on the spread of Omicron due later on Thursday from the UK Health Security Agency is expected to offer further clues as to its severity.
AstraZeneca said a three-course dose of its COVID-19 vaccine offered protection against the variant, citing data from an Oxford University lab study.
Hours earlier, Novavax Inc. (NVAX.O) said early data showed its vaccine – authorised for use by the European Union and WHO but yet to be approved by the United States – also generated an immune response against Omicron.
In the United States, the Food and Drug Administration authorised Merck & Co’s (MRK.N) antiviral pill for COVID-19 for certain high-risk adult patients, a day after giving the go-ahead to a similar treatment from Pfizer Inc (PFE.N) for high-risk patients above the age of 12. read more
But President Joe Biden’s steps to backstop hospitals and distribute coronavirus test kits are too little too late to stem a…