The first new treatment in 60 years for a particularly stubborn kind of malaria is raising hopes that it might help eradicate the disease, even though the treatment can cause a dangerous side effect.
Called tafenoquine, the drug targets the parasite that causes relapsing malaria. Plasmodium vivax infects an estimated 8.5 million people, mainly in Asia and Latin America. Each time...
Health officials have confirmed 12 cases of rat lungworm disease in the continental United States since January 2011 — including six patients who had not traveled abroad but still contracted the illness caused by a parasite endemic to tropical regions in Asia and Hawaii.
While the disease can be mild, it can become extreme and cause severe neurological problems. In most of the new cases...
When a 78-year-old woman went to a hospital in Guangzhou, China, in November 2012 complaining of a headache, drowsiness and a stiff neck, doctors initially were puzzled. The patient had meningitis, but no signs of bacteria or viruses that can cause the illness. Then a cerebrospinal fluid test revealed she had a high number of white blood cells called eosinophils, a clue that she was fighting a...
In the final frenzy of reproduction and death, social amoebas secrete proteins that help preserve a starter kit of food for its offspring.
Dictyostelium discoideum, a type of slime mold in soil, eats bacteria. Some wild forms of this species essentially farm the microbes, passing them along in spore cases that give the next generation of amoebas the beginnings of a fine local patch of...
For more than a century, scientists have tried to grow Treponema pallidum, the corkscrew-shaped bacterium that causes syphilis. But the stubborn spirochete has refused to thrive any place outside of a human or rabbit for more than 18 days. That doesn’t give researchers much time to study it.
“I’ve basically spent my entire career watching these organisms die,” says microbiologist Steven...
Burrowing giant clams have perfected the ship-in-a-bottle trick, and the one big thing that scientists convinced themselves couldn’t explain it, actually can.
Tridacna crocea, the smallest of the 10 or so giant clam species, grows a shell that eventually reaches the size of a large fist. Starting as youngsters, the burrowers bore into the stony mass of an Indo-Pacific coral reef,...
In 1918, a pandemic of Spanish flu killed as much as 5 percent of the world’s population. A hundred years later, scientists know much more about how to prevent and treat such diseases. But in some ways, the threat of a global outbreak is greater than ever. All it takes is one plane ride for a few localized cases of a disease to become an epidemic.
A new exhibit at the Smithsonian...
The Science Life
What do land mines and tuberculosis have in common? Both kill people in developing countries — and both can be sniffed out by rodents that grow up to 3 feet, head to tail.
Since 2000, the international nonprofit APOPO has partnered with Tanzania’s Sokoine University of Agriculture to train African giant pouched rats (Cricetomys ansorgei) to pick up the scent of TNT in land mines. By 2016...
Just a few tweaks to a bacterial enzyme make it a lean, mean plastic-destroying machine.
One type of plastic, polyethylene terephthalate, or PET, is widely used in polyester clothing and disposable bottles and is notoriously persistent in landfills. In 2016, Japanese scientists identified a new species of bacteria, Ideonella sakaiensis, which has a specialized enzyme that can naturally...
Pathogen detectors built into plastic patches could someday spare you food poisoning.
Carlos Filipe, a chemical engineer at McMaster University in Hamilton, Canada, and colleagues have developed a new kind of flexible film that’s coated in molecules that glow when they touch E. coli cells. This type of sensor also glows in the presence of molecules secreted by E. coli, so the material...