Delta plus: Scientists say too early to tell risk of Covid-19 variant

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India has classified a new variant of the coronavirus first identified in Europe as a "variant of concern", but it's too early to really tell.

A mutation is elevated from a "variant of interest" to a "variant of concern" (VOC) when it shows evidence of fulfilling at least one pg gaming of several criteria, including easy transmission, more severe illness, reduced neutralization by antibodies or reduced effectiveness of treatment and vaccines.

India's health ministry says studies showed that the so-called Delta plus variant - also known as AY.1 - spreads more easily, binds more easily to lung cells and is potentially resistant to monoclonal antibody therapy, a potent intravenous infusion of antibodies to neutralise the virus.

The variant is related to the Delta, an existing variant of concern, which was first identified in India last year and is thought to have driven the deadly second wave of infections in the summer.

The health ministry says the Delta plus variant, first found in India in April, has been detected in around 40 samples from six districts in three states - Maharashtra, Kerala and Madhya Pradesh. At least 16 of these samples were found in Maharashtra, one of the states hardest hit by the pandemic.

Delta plus has also been found in nine other countries - USA, UK, Portugal, Switzerland, Japan, Poland, Nepal, Russia and China - compared to the original highly contagious Delta strain, which has now spread to 80 countries.