Stocks

AstraZeneca, Pfizer vaccines effective against Delta COVID-19 variants-study By Reuters

© Reuters. FILE PHOTO: Vials labelled “Astra Zeneca COVID-19 Coronavirus Vaccine” and a syringe are seen in front of a displayed AstraZeneca logo, in this illustration photo taken March 14, 2021. REUTERS/Dado Ruvic

(Corrects paragraphs 8 and 9 to clarify insight was based on blood analysis, not cases of reinfection)

By Ludwig Burger and Aishwarya Nair

(Reuters) – COVID-19 vaccines made by AstraZeneca (NASDAQ:) and the Pfizer-BioNTech alliance remain broadly effective against Delta and Kappa variants of the COVID-19 causing virus, which were first identified in India, according to a scientific study, underpinning a continued push to deliver the shots.

The study by Oxford University researchers, published in the journal Cell, investigated the ability of antibodies in the blood from people, who were vaccinated with the two-shot regimens, to neutralize the highly contagious Delta and Kappa variants, a statement said.

“There is no evidence of widespread escape suggesting that the current generation of vaccines will provide protection against the B.1.617 lineage,” the paper said, referring to the Delta and Kappa variants by a commonly used code.

However, the concentration of neutralising antibodies in the blood was somewhat reduced, which may lead to some breakthrough infections, they cautioned.

Last week, an analysis by the Public Health England (PHE) showed that vaccines made by Pfizer Inc (NYSE:) and AstraZeneca offer high protection of more than 90% against hospitalization from the Delta variant.

“We are encouraged to see the non-clinical results published from Oxford and these data, alongside the recent early real-world analysis from Public Health England, provide us with a positive indication that our vaccine can have significant impact against the Delta variant,” AstraZeneca executive Mene Pangalos said in a separate statement.

The Delta variant is becoming the globally dominant version of the disease, the World Health Organization’s chief scientist said on Friday.

The Oxford researchers also analysed the likelihood of reinfection in people who had previously had COVID-19.

Looking at the ability of antibodies in their blood samples to neutralize the variants, the risk of reinfection with the Delta variant appeared particularly high in individuals previously infected by the Beta and Gamma lineages that emerged in South Africa and Brazil, respectively.

By contrast, previous infection with the Alpha, or B117, variant first detected in Britain, conferred “reasonable” cross-protection against all variants of concern, lending itself as a template that next-generation vaccines could be molded on.

“B117 might be a candidate for new variant vaccines to provide the broadest protection,” the researchers said.

Disclaimer: Fusion Media would like to remind you that the data contained in this website is not necessarily real-time nor accurate. All CFDs (stocks, indexes, futures) and Forex prices are not provided by exchanges but rather by market makers, and so prices may not be accurate and may differ from the actual market price, meaning prices are indicative and not appropriate for trading purposes. Therefore Fusion Media doesn`t bear any responsibility for any trading losses you might incur as a result of using this data.

Fusion Media or anyone involved with Fusion Media will not accept any liability for loss or damage as a result of reliance on the information including data, quotes, charts and buy/sell signals contained within this website. Please be fully informed regarding the risks and costs associated with trading the financial markets, it is one of the riskiest investment forms possible.


Most Related Links :
Business News Governmental News Finance News

Need Your Help Today. Your $1 can change life.

[charitable_donation_form campaign_id=57167]

Source link

Back to top button