While Russia and China may have stolen a march in the race to develop a Covid-19 shot, granting regulatory approval to vaccine candidates even before Phase III human trials, all eyes are on the other leading vaccine candidates by Pfizer, Oxford University-AstraZeneca, and Moderna. All three are currently undergoing late-stage trials and it has become evident that a vaccine would be made available this year itself. On Tuesday, Russia released the first batch of its Sputnik V Covid-19 vaccine for public use.
According to the World Health Organisation, about 175 vaccine candidates are in pre-clinical or clinical trials at present. About 33 of them are in the clinical trials phase. Eight contenders are in final stages, phase-III of human trials. At least eight candidate vaccines are being developed in India of which two are in phase II trial phase.
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