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"What does a mask do? Blocks respiratory droplets coming from your mouth and throat."

Twitter user, Rich Davis shared a visual on the platform demonstrating the difference between wearing a mask or not.

The Clinical Microbiology Lab Director sneezed, sang, talked and coughed toward an agar culture plate and through his experiment showed the vast difference in bacteria spread from respiratory droplets.

In a second experiment, Davis demonstrates the relevance of social distancing with the effectiveness of the masks.

"As seen by number of bacteria colonies, droplets mostly landed <6 ft, but a mask blocked nearly all of them," he wrote.

The Lab Director added that while he is aware that his simple experiment is not an official model of the spread of COVID-19, it shows how wearing a mask can help restrict respiratory droplets from the mouth.

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