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The history of vaccines, from smallpox to SARS and beyond – ABC News

Vaccine research for COVID-19 continues apace, with Russia set to release one in October, and other countries possibly by the end of the year. But the history of vaccine development has typically taken years, not months.

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August 25, 2020 10:19:36
Russia has surprised the world with President Vladimir Putin announcing the first COVID-19 vaccine to win approval, sparking debate among scientists over whether the country has bypassed necessary safety checks. The World Health Organisation is reportedly calling for caution, citing a possible lack of appropriate clinical trials.
The Russian breakthrough is one of more than 160 potential COVID-19 vaccines in various stages of trials around the globe, with 150…

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