Researchers on Tuesday unveiled a blueprint to guide the next steps in the hunt for a more effective vaccine against tuberculosis as the world's most advanced clinical trial nears its end.

The plan is part of a global push aimed at giving TB research the same high profile -- and funding -- that goes to diseases like AIDS.

The anti-inflammatory drug ibuprofen can reduce acute altitude sickness suffered by a quarter of the millions of Americans who travel to the mountains to ski or hike, according to a clinical study published Tuesday.

Grant Lipman, the Stanford University researcher who led the study, described altitude sickness as being like "a really nasty hangover."

Drug makers AstraZeneca and Targacept say they have abandoned plans to seek regulatory approval for a drug intended to treat major depressive disorder.

AstraZeneca PLC said Tuesday that the drug TC-5214 did not perform as hoped in an eight-week trial compared to a placebo.

Six people have been arrested in a police sting in Spain and Britain, suspected of importing and selling large quantities of fake medication from Asia including Viagra, Europol said Monday.

"The members of the criminal gang were importing fake pharmaceuticals from Asia -- mainly China and Singapore -- and distributing them via the Internet to 'customers' throughout Europe," the police agency said in a statement.

A global health alliance Monday unveiled plans for the first clinical tests of a new treatment regimen for tuberculosis, including for patients with resistance to existing multidrug programs.

The TB Alliance, which is funded by several governments and foundations, said the new drug combination offers promise in the fight against TB, which kills an estimated 1.4 million people each year, mostly in Africa.

Lindsay Porter's kidneys were failing rapidly when a friend offered to donate one of his. Then she made an unusual request: Would he donate part of his immune system, too?

Every day for the rest of their lives, transplant recipients must swallow handfuls of pills to keep their bodies from rejecting a donated organ. The Chicago woman hoped to avoid those problematic drugs, enrolling in a study to try to trick her own immune system into accepting a foreign kidney.

A leading Chinese poultry company said Monday it had sacked four employees suspected of being involved in a food safety scandal that saw diseased ducks sold to unsuspecting consumers.

The case is the latest in a long list of high-profile food safety problems to hit China that have included pork deliberately laced with chemicals, dyed buns and tainted milk.

The first study to look at methamphetamine's potential lasting effects on children whose mothers used it in pregnancy finds these kids at higher risk for behavior problems than other children.

The behavior differences — anxiety, depression, moodiness — weren't huge, but lead researcher Linda LaGasse called them "very worrisome."

Angeline Chilton says she can't drive unless she smokes pot.

The suburban Denver woman uses medical marijuana to ease multiple sclerosis symptoms and says she'd never get behind the wheel right after smoking. But her case underscores a problem that no one's sure how to solve: How do you tell if someone is too stoned to drive?

Ailing President Hugo Chavez, just back from cancer surgery in Cuba, said Saturday he would start radiation treatments "in the coming days," amid rising drama over his health as he seeks reelection late his year.

"Now I have to start radiation in the coming days to attack any new threat. This cancer is not going to be the end of Chavez," the leftist president told supporters at Miraflores Palace, without saying if he would be treated in Venezuela or Cuba, his main regional ally.