The Plague Closes Los Angeles Forest

by Sean McLachlan on

Officials evacuated and closed parts of the Angeles National Forest after finding a dead squirrel that was infected with bubonic plague, the BBC reports.

Scientists are currently examining the squirrel to see if it died of the disease or of other causes. Park officials are using insecticides on squirrel burrows to kill off any fleas, which is how the disease spreads from one animal to another. The Twisted Arrow, Broken Blade and Pima Loops of the Table Mountain campgrounds are closed until further notice, although hiking is still permitted.

The plague killed about a third of Europe’s population in the 14th century but is not nearly as active these days. Only four people have contracted the disease in Los Angeles County since 1984. This map from the Center for Disease Control and Prevention shows each case of the plague in the United States since 1970. About 80% were of the bubonic variety and most cases were not fatal, since antibiotic treatment is usually successful. In related news, researchers at the Max Planck Institute in Germany are developing an easy test to detect the plague in its early stages.

As you can see, there are two main clusters. New Mexico gets about half of all the human infections in the U.S. In the 1980s, the worst plague decade, it had slightly more than a hundred cases. Worldwide, most plague cases are in south central Africa and east Asia. People tend to get it while engaged in outdoor activities.

London Crossrail Project Unearths Black Death Burial Pit

by Sean McLachlan on

“Bring out your dead!”

If you lived in London in 1348-50, you’d hear that call a lot. All of Europe was swept with the Black Death, a virulent plague that killed an estimated one-third of the population. London, like other congested urban areas, got hit hard.

Now archaeologists working in London have uncovered a mass grave of Black Death victims, a Crossrail press release reports. Digging ahead of the planned London Crossrail transportation project, the team discovered a mass grave of 13 bodies at Charterhouse Square, an area known as a burial ground during the plague. Pottery from the mid-14th century found at the site helps confirm the identification.

The bodies were laid out neatly in rows, hinting that the burial ground was from the early stages of the Black Death. When the plague was going full force, bodies were simply dumped into giant pits.

Now archaeologists are examining the bones to learn more about how the people lived, including diet, physical health and work-related wear and tear on the body. They also hope to find surviving DNA from the plague to give scientists a better idea of how it developed. Researchers stress that the plague bacteria cannot live for long in the soil and the excavation poses no health risk.

This is only the latest in a series of finds by the Crossrail workers. Earlier we reported on their discovery of a 3,500-year-old Bronze Age trackway. The Crossrail project is a high-speed train system that will link 37 stations along 73 miles of track through London. It’s due to open in 2018.

Sadly, the 14th century plague was only the first wave of a persistent contagion. The Black Death returned to London several times, the worst being in 1665-6, when it killed 100,000 Londoners.

[Photo courtesy Wikimedia Commons]