Pandora Report 7.11.15

Sorry for the late update here at Pandora Report. We’ve got how the plague turned so deadly, an Ebola update, and of course other stories you may have missed.

Have a great week!

These Two Mutations Turned Not-so-Deadly Bacteria Into the Plague

Researchers at Northwestern University have been investigating how Yersinia pestis—the bacteria that causes bubonic, pneumonic, and septicemic plague—became the infective cause of the Black Death. They discovered two mutations that help to explain the bacteria’s lethality.

Smithsonian.com—“The first mutation gave the bacteria the ability to make a protein called Pla. Without Pla, Y. pestis couldn’t infect the lungs. The second mutation allowed the bacteria to enter deeper into the bodies, say through a bite, to infect blood and the lymphatic system. In other words, first the plague grew deadly, then it found a way to leap more easily from infected fleas or rodents to humans.

Ebola Strain Found on Teen in Liberia Genetically Similar to Viruses in Same Area Months Ago

I’m sure you’ve heard that there were three new cases of Ebola in Liberia—a country that was declared free of the disease on May 9. According to the World Health Organization, samples taken from a teenager who died from Ebola two weeks prior indicate that the disease is genetically similar to strains that infected people in the same area over six months ago—while the outbreak was still ongoing.

US News and World Report—“That finding by genetic sequencing suggests it is unlikely the virus was caught from travel to infected areas of Guinea or Sierra Leone, the group said. “It also makes it unlikely that this has been caused by a new emergence from a natural reservoir, such as a bat or other animal,” it said.”

Stories You May Have Missed

Image Credit: en.wikipedia

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