Scientists Never Confirmed That The Spanish Flu Was Contagious

In a 1919 study on the spread of Spanish Flu, researchers exposed Navy volunteers to microbial samples taken from the throats and noses of sick patients - but none of them became sick. They then drew blood from influenza patients and transferred it to the volunteers, but again, none of them became sick. Next, they tried injecting the Navy volunteers with infected mucous - none of them got sick then, either.

Finally, the researchers brought the volunteers to meet the influenza patients, who were instructed to cough and exhale in their faces. Not one person became sick as a result. This study and others since have repeatedly failed to demonstrate that the Spanish Flu is contagious between humans.

"Perhaps, if we have learned anything, it is that we are not quite sure what we know about the disease.”

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