Two Indian candidates for a vaccine targeting the novel coronavirus SARS-CoV2 have been granted permission for Phase I and II trials in India. One is being developed by Ahmedabad-based Cadila Healthcare, and the other by Hyderabad-based Bharat Biotech. The latter has now tied up with private health care labs for human trials, as well as some public hospitals; the All India Institute of Medical Sciences in New Delhi gave a 30-year-old man the first dose of the Bharat Biotech candidate, called Covaxin, last week. These two indigenously developed vaccines now join 23 other candidates from across the world in clinical trials. Of the 25 vaccine candidates that have moved from pre-clinical investigation to clinical trials, five are already in Phase III trials, which are large-scale population trials that include particularly at-risk segments such as the elderly or those with co-morbidities. One of those is AZD1222, commonly known as the “Oxford vaccine” because it has been developed at Oxford University’s Jenner Institute with support from the European pharmaceutical major, AstraZeneca. The developers of AZD1222 have signed agreements with Bill Gates’ Coalition for Epidemic Preparedness Innovations and the public-private alliance GAVI, which includes the Government of India and Pune-based vaccine producer Serum Institute of India. It is expected, therefore, that AZD1222 will also receive the nod for clinical trials in India. Elsewhere in the world, three Chinese vaccines are already in Phase III trials, one from Sinovac and two from Sinopharm; and much hope also attaches to the shortly-to-begin trials of a promising candidate from the American company Moderna.

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