Speed bump

A “speed bump” is something that stops a person or thing from progressing.

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A “speed bump” is something that stops a person or thing from progressing. One promising Covid-19 vaccine in development ran into a “speed bump” in September when a trial participant fell ill. The vaccine development stopped progressing because a trial participant fell ill. With any sort of success, there will likely be many “speed bumps” along the way. A “speed bump” can also refer to a raised portion in a road that is designed to limit vehicle speed.

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