'Vaccines have to be tested because there's precedent for vaccines to make things worse. And you don't want to rush and treat a million people and find out you're making 900,000 worse,' said Dr. Leonard Schleifer, the CEO of Regeneron Pharmaceuticals.
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https://www.dailymail.co.uk/news/article-8067015/Donald-Trump-demands-coronavirus-vaccine-two-…
