Category: Bacteria

Mardi Gras at the Leprosarium

By Rebecca Kreston | February 16, 2015 7:20 pm

Laissez les bons temps rouler! Tomorrow is the final and momentous hurrah of the Carnival season, which culminates with Mardi Gras, otherwise known as Fat Tuesday. In New Orleans, the city I call home, Carnival is a season of festivities, decadence, and tradition, one that is celebrated amongst neighbours and visitors alike. Our revelry is an egalitarian one – everyone is welcome to come witness and participate in Carnival. But, for over a century, just a couple of hours away from the Crescent City, there lived a community of exiles, quarantined and barred from society, who were forced to forge their own Mardi Gras traditions. In honor of the biggest party of the year, I’m republishing my article on the celebration of Mardi Gras at one of America’s last leper colonies, just a few hours up the Mississippi river in Carville, Louisiana. 

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Abracadabra!

By Rebecca Kreston | January 26, 2015 11:10 pm

Abracadabra! Many of us are familiar with this mystical incantation. Its arcane staccato and euphonious intonation has become deeply ingrained in our language through the word’s use as a magical catchphrase. The hex was, in my childhood experience, rather useless when it came to opening locked cabinets and provoking instantaneous transformations; nothing was conjured and very little materialized except for my own disappointment. But millennia past, this word was held in reverence, and it was used for a whole other purpose altogether. Abracadabra was not a silly-sounding piece of magician’s gibberish, but the “most famous of the ancient charms or talismans employed in medicine” and a powerful invocation against a very specific and very dangerous curse: malaria.

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The Magic Arrow: Penicillin & the Recurrin’ Urine

By Rebecca Kreston | December 31, 2014 4:32 pm

In March of 1942, a young woman was dying of sepsis in a New Haven hospital. In just one day, she would be miraculously revived by a newly discovered experimental drug, seemingly by “black magic” as one consulting physician would mutter. The woman’s full recovery with the new antibiotic known as penicillin was the very first occasion of its usage in the United States and would jump-start the pharmaceutical industry’s interest in and manufacture of the drug (1).

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Before & After: Respiratory Microbes among Pilgrims to the Hajj

By Rebecca Kreston | November 30, 2014 10:55 pm

The Hajj, the pilgrimage to Mecca by millions of Muslims from around the world, is one of the largest gatherings of man on the face of the earth. This annual event took place just last month with relatively little fanfare from the news media, which is, from an epidemiological standpoint, a very good thing. Every year, public health officials wring their hands at the thought of possible outbreaks caused by the global pathogen du jour capitalizing upon the convergence of millions of worshipers in the Saudi Arabian desert. SARS stole the headlines in 2009, Middle Eastern Respiratory Virus or MERS had it last year, and Ebola seemed a likely contender for this calendar year.

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Heroin’s Anthrax Problem

By Rebecca Kreston | August 30, 2014 12:59 pm

This may come as a total shock, but pure forms of illicit drugs can be hard to come by. Certain controlled substances are frequently adulterated, if not outright contaminated, by products that range from the household to the industrial to the pharmaceutical. Of course, some substances are more easily, frequently, and profitably adulterated than others: cocaine purchased on the retail level is on average 31%, well, not cocaine, while the purity of heroin on the street is even lower, resting around 65% (1).

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Care About Health? Ditch the Bucket & Get Vaccinated

By Rebecca Kreston | August 22, 2014 2:00 pm

Unbeknownst to many of the public, August was National Immunization Awareness Month. I know, I know: it’s been overshadowed by some very exotic and thrilling headliners this month. The Ebola epidemic blazing defiantly in West Africa. The jaw-dropping videos shown on Discovery Channel’s “Shark Week.” The ALS Ice Bucket Challenge clogging everyone’s social feeds. Vaccines are just not as sexy or as flamboyant as these issues. Truthfully, they’re a bit dull to talk about, not a topic you would tend to bring up at cocktail parties or at the water cooler. Read More

Out of the Lab & Into the Mouth

By Rebecca Kreston | June 30, 2014 8:31 am

Many pitfalls await the undergraduate in the laboratory. Bunsen burners! Liquid nitrogen! The slack work ethic of one’s peers! The dreaded group projects! But the most common risk budding researchers face are the rubber glove-donners themselves, perpetrator and victim rolled into one lab coat-wearing pipetter, armed and often dangerous with great knowledge but little know-how.

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Bad Chompers & Bum Tickers

By Rebecca Kreston | June 22, 2014 9:45 am

It’s one of the easiest ways to care for your health, a ritual we participate in daily: brushing those osseous outcroppings, our teeth. For those of us who heed the pleas of our dentists, flossing is a part of our routines, too. But the state of affairs of our glistening maws – the density of plaque, the presence of gingivitis, a full set of chompers – is important beyond mere aesthetics. Good oral fitness, particularly steps taken to limit the bacterial status quo, plays an important role in the goings-on of our body as a whole; a dirty mouth – and not the kind prone to sailor-like profanity – can provide important clues as to how susceptible you are to heart attacks and strokes.

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Pyromania! On Neurosyphilis and Fighting Fire with Fire

By Rebecca Kreston | May 31, 2014 11:20 am

Medicine is an imperfect science, its history shot through with barbaric and dubious practices from grave robbing to bloodletting. Since even before the time of that father of modern medicine, it can seem that physicians have more often violated Hippocrates’ decree “above all, do no harm” than abided by it.

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A Reptile Dysfunction: Unlikely Sources of Salmonella

By Rebecca Kreston | March 24, 2014 9:35 am

Salmonella may well be one of the most disreputable microbes in Western society. It’s infamous for its food-poisoning capabilities and has a well known history of wrecking the bonhomous vibe following a good summer barbecue, not to mention its singular ability to cast a sickly shadow over the breathtaking bounty of an all-you-can-eat buffet.

An illustration of a petri dish with red Salmonella bacteria rods.

A gram stain of a species of Salmonella. Image: CDC.

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