Revived search for a TB vaccine may be about to pay off

After nearly 100 years, researchers could be on the verge of finding a vaccine that would eradicate tuberculosis infections. 

Health experts say TB kills at least 1.4 million people a year and are eagerly awaiting clinical trial results, expected early next week, of the first new vaccine in 90 years designed to prevent tuberculosis infections. 

While it might not prove effective, it will bring scientists much closer to creating a new generation of TB vaccines. 

Treating typical TB is a long process, with patients needing to take a cocktail of antibiotics for six months. 

Many fail to complete treatment and that has given rise to drug resistance.