(Aditya Shaw, Intern Journalist): Coronavirus, which has killed more than 1.3 million people around the world, is almost ready after vaccine trials of three big companies to end the epidemic. US giant Moderna has claimed that its coronavirus vaccine proved to be 94.5 percent effective in preliminary trial data. Pfizer and BioNTech, another US company, have announced that their coronavirus has proved to be 90 percent effective in the vaccine trial. But the question is, which vaccine can be most effective for developing and poor countries like India in this war of vaccine.
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