5 of the most important vaccines in history – Business Insider Australia

• Some of the most important vaccines in history include the polio, MMR, and smallpox vaccines.
• Vaccines have been around since the late 18th century, and have saved countless lives since then.
• Today, the WHO estimates that vaccines save an estimated 2-3 million lives each year.
• Visit Insider’s Health Reference library for more advice.

For many scientists worldwide, the year 2020 was a race to develop a vaccine for the coronavirus. Designing and testing a vaccine is a slow process â” but once a…

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