A recent simple mask experiment by a doctor explains why this special personal protective equipment is a key tool to reduce the risk of transmission of the new coronavirus,media BGR reported. A doctor performed the same test soning a mask and not wearing a mask to show how many microbes a person can spray when he sneezes, coughs, sings and simply speaks.
Experiments have shown that wearing a mask can significantly reduce a person’s exposure to the virus, thereby minimizing the risk of COVID-19 infection.
“What does the mask do?” Stop respiratory droplets from coming out of your mouth and throat. Dr. Ricky Davis posted a simple demo on Twitter showing how masks work.
He held the agar culture plate a foot away from his face, and then he sneezed, sang, talked and coughed twice on the agar culture board. He did the same thing with a mask, and then he made the results public. Agar culture plates are used in microbiology to grow cultures of various pathogens. Davis is director of the Clinical Microbiology Laboratory at Providence Sacred Heart Medical Center in Spokane, Washington, so he clearly knows exactly how these dishes work.
Unsurprisingly, the number of petri dishes exposed to the bacteria ejected from Davis’s mouth increased significantly, as shown in the figure below. Agar petri dish protected by his mask clearly illustrates the effectiveness of the mask. Most of them have few visible signs of bacterial growth compared to agar culture plates that are directly exposed to Davis.