Moderna today announced it is developing a booster shot to proactively address the evolving Covid-19 virus, particularly to guard against a new South African strain.
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Historically, important scientific announcements about vaccines are made through peer-reviewed medical research papers that have undergone extensive scrutiny about study design, results and assumptions, not through company press releases. So did Pfizer’s stock deserve its double-digit percentage bump? The answers to the following five questions will help us know.
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