Vaccinating 130 crore people with injectable covaxin a challenge, Says Bharat Biotech
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Even as India's first indigenous coronavirus vaccine Covaxin is entering its third phase of human trials, Bharat Biotech on Monday raised the logistical query on "how to vaccinate 1.3 billion (130 crore) people with two injectable doses. Terming the exercise a "challenge" it also said that work was on single-dose nasal drop vaccine.