The History Of Vaccines And Why Sales Are Rising

Vaccines are one of the biggest successes of modern medicine. They save up to 3 million people worldwide every year. From research and discovery to product development, it can cost up to a billion dollars to make one vaccine, and that process -- can last up to 15 years. During the past few decades the number of companies producing vaccines has dwindled to just a handful. There are other players in the space but today the four big drug companies that now dominate the market are Merck, Pfizer, Sanofi Pasteur

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