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Black Death: The Upside To The Plague Killing Half Of Europe

May 12 2014, 5:54am CDT | by

The Black Death, caused by the bacterium Yersinia pestis, wiped out 30 to 50 percent of Europe’s population between 1347 and 1351. But, this is just the most infamous of the little microbe’s...

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23 weeks ago

Black Death: The Upside To The Plague Killing Half Of Europe

May 12 2014, 5:54am CDT | by

The Black Death, caused by the bacterium Yersinia pestis, wiped out 30 to 50 percent of Europe’s population between 1347 and 1351. But, this is just the most infamous of the little microbe’s shenanigans. Y. pestis, which is one-millionth our size, has caused three major pandemics and continues killing people to this very day. The plague gets such a bad rap because it represents some of the greatest tragedies to ever befall the human race.

Can anything nice be said about the plague? As it turns out, yes. A new analysis by Sharon DeWitte in PLoS ONE suggests a silver lining: Black Death survivors and their descendants were healthier and longer-living, meaning that the plague served as a gigantic natural selection event eliminating many of the weak and frail from the population.

Because so many people died, it was widely assumed that the Black Death killed indiscriminately. But that’s not true. Elderly people and those who were in poor health to begin with were much likelier to die. To be sure, the plague kills healthy people, too. But, as with most infectious diseases, healthy people have a better chance at surviving. Ironically, the Europeans who made it through the Black Death inherited a much better world. Food prices dropped, labor wages increased, and there was a boost in the standard of living.

Dr. DeWitte examined the skeletal remains of 464 pre-Black Death Londoners who died in the 11th to 13th Centuries. She also examined the remains of 133 post-Black Death Londoners who died between 1350 and the mid-16th Century. Given the better standard of living following the Black Death, Dr. DeWitte reasoned that the post-Black Death population should have lived longer. And that’s exactly what she found.

As shown, the survival curve for post-Black Death Londoners was greatly improved compared to the pre-Black Death survival curve. A much greater fraction of the population survived to middle age and beyond.

Once again, the adage, “What doesn’t kill you makes you stronger,” turns out to be accurate.

Source: DeWitte SN (2014) Mortality Risk and Survival in the Aftermath of the Medieval Black Death. PLoS ONE 9(5): e96513. doi:10.1371/journal.pone.0096513

This article was originally published at RealClearScience.

 
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7 weeks ago

Khazanah throws MAS RM6b lifeline

Aug 29 2014 5:01pm CDT | Source: Business Times Singapore

August 30, 2014 1:15 AMKHAZANAH Nasional will inject RM6 billion (SS$2.4 billion) over three years to resuscitate loss-making Malaysia Airlines (MAS) under a recovery plan that includes even an Act of Parliament. Other key moves are migrating its operations, assets and liabilities to a new company (NewCo) and ...
Source: Business Times Singapore   Full article at: Business Times Singapore
 

 
Update
1

7 weeks ago

MAS posts loss of RM307m for Q2

Aug 28 2014 5:00pm CDT | Source: Business Times Singapore

August 29, 2014 1:13 AMMALAYSIA Airlines (MAS) registered a loss of RM307 million (S$122 million) for the second quarter to end-June, but warned of worse to come in the second half when the "full financial impact of the double tragedies of MH370 and MH17 ...
Source: Business Times Singapore   Full article at: Business Times Singapore
 

 

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