Posts Tagged ‘infectious disease’

Mathematicians Develop Strategy to Fight Zombies; Bruce Campbell Unimpressed

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zombiesIf the possibility of a zombie attack keeps you awake at night, rest assured you’re not the only one who’s pondered such an occurence. In fact, researchers have performed a new mathematical analysis that explores how we might best approach a battle with the un-dead.

The BBC reports:

If zombies actually existed, an attack by them would lead to the collapse of civilisation unless dealt with quickly and aggressively….

[The researchers] say only frequent counter-attacks with increasing force would eradicate the fictional creatures.

Although zombies may be a slightly-less-than-serious topic, there’s a serious side to the study, which was published in a book called Infectious Diseases Modelling Research Progress. A zombie attack could be similar to a plague of infectious disease, the researchers say.

Still, there’s one big difference: Once completely wiped out, diseases don’t come oozing and groaning back from the dead.

Related Content:
Gallery: Zombie Animals and the Parasite That Control Them
Discoblog: Parasitic Plants Steal RNA, Spy on Their Hosts
Discoblog: See It to Believe It: Animals Vomit, Spurt Blood to Thwart Predators

Image: flickr / thivierr

August 19th, 2009 Tags: , ,
by Allison Bond in Where We Came From & Where We're Going | 2 Comments » | RSS feed | Trackback >

Prepare to Itch: Potential Malaria Vaccine Delivered by Mosquitoes

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mosquitoIn case you haven’t heard, malaria is kind of a big deal. It’s the third-deadliest infectious disease in the world, kills about a million people a year, and has a frustratingly ingenious way of becoming resistant to anti-malarial treatments. Now scientists are trying out a rather counter-intuitive method of preventing malaria cases: Using malaria-infected mosquitoes to boost immunity.

It’s a crazy idea that just might work. That’s because people can become immune to malaria if they contract it multiple times, and because the drug chloroquine kills malaria parasites when they’re in the bloodstream.

The AP reports:

Scientists tried to take advantage of these two factors, by using chloroquine to protect people while gradually exposing them to malaria parasites and letting immunity develop.

They assigned 10 volunteers to a “vaccine” group and five others to a comparison group. All were given chloroquine for three months, and exposed once a month to about a dozen mosquitoes — malaria-infected ones in the vaccine group and non-infected mosquitoes in the comparison group.

That was to allow the “vaccine” effect to develop.

The next task, of course, was to see if the vaccine actually worked. When the study’s subjects stopped taking chloroquine and were bitten by mosquitoes carrying the malaria parasite, subjects in the control group developed malaria, while none in the vaccine group did.

Malaria’s increasing resistance to the strongest drugs may make a vaccine our only hope for fighting the parasite. So if a few itchy mosquito bites could put an end to this pervasive disease, we’ll gladly leave our bug spray at home.

Related Content:
DISCOVER: Vaccine Production is Horribly Outdated. Here Are Three Ways to Fix It
80beats: Drug-Resistant Malaria in Cambodia Raises Fears of a Super Parasite
Discoblog: If You’re Looking for New Drugs, Follow the Bright Bugs

Image: flickr / James Jordan

August 3rd, 2009 Tags: , , ,
by Allison Bond in Diseases, Injuries, & Other Ailments | No Comments » | RSS feed | Trackback >

“Tick Riders” Watch for Blood-Sucking Invaders at the Mexican Border

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fever tickIn a remote region in southern Texas, a horde of eight-legged creatures feasts on a flock of helpless prey. These tiny parasites are called fever ticks, and they’re threatening to invade the U.S. and decimate our cattle population. But not if the Tick Riders can stop them.

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April 22nd, 2008 Tags: ,
by Karen Rowan in Pollution Solutions (& Disasters), The Wide (& Strange) World of Animals | No Comments » | RSS feed | Trackback >