Aday after Bharat Biotech announced 77.8 percent efficacy for its Covaxin Covid-19 vaccine that’s being used in India, the company is now set to meet World Health Organisation (WHO) officials to seek emergency use approval from the global body.

The Emergency Use Listing (EUL) by the global health body will now supply the Covid-19 doses to different parts of the countries.

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The EUL generally a WHO-offered license to the company to make their vaccine available to people. India is using Covisheild, manufactured by the Serum Institute of India.

The WHO EUL listing holds importance amid the continuous mutations of the virus, which has evolved from Delta to Delta Plus variant over the course of a month. While cases of the Delta variant have been found in 80 countries, Delta Plus patients have been found in nine countries — USA, UK, Portugal, Switzerland, Japan, Poland, Nepal, China, Russia and India.

So, how does WHO list a vaccine for emergency use? Read on to find out.