'Black Death was not spread by rats, but by people themselves'

Photo source: healthline.com

According to new research, not rats but fleas and lice on humans were responsible for the spread of the plague. The Black Death, as the plague is also called, took the lives of some 25 million Europeans in a series of epidemics from the fourteenth to the nineteenth century. - about half of the then population of the continent. It is assumed that the spread of the disease mainly occurred by fleas on rats, but researchers from the universities of Oslo and Ferrara argue that the spread of the plague "can largely be attributed to fleas and lice on people," reports the BBC. 

Professor Nils Stenseth from the University of Oslo: "We have good mortality rates from outbreaks of plague in nine cities in Europe. So we could make models of the dynamics of this disease. " With his team, Stenseth then simulated the outbreak of the plague in these cities, according to three different models. One with spread through rats, one with spread through the air and one through fleas and lice that live on people and clothing of people. 

In seven of the nine cities on which the simulations were applied, the model with fleas and lice that live on people's and human clothing was much better suited to the original pattern of the outbreak than the fleas on rats. "The conclusion was clear," says Stenseth. "The lice model suited the best. If it had actually been spread through rats, it would never have gone so fast. Then it would have gone from rat to rat, rather than being spread from person to person. " Stenseth: "Our research shows that hygiene is very important in preventing future spreading. It also shows that if you are ill, you need to get in touch with as few people as possible and actually stay home. "


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