The giant poultry producer says that it is now raising all of its chickens without routine antibiotics. Only those flocks that get sick, about 5 percent of all birds, will be treated.
We know that bacteria can become resistant to antibiotics, but we've never seen it happen. An MIT scientist figured out how to show bacteria surviving antibiotics and invading a giant petri dish.
Many of the most powerful antibiotics have lost their punch. Some Stanford students think they've found a different way to attack bacteria that the germs can't overcome.
Syphilis cases are on the rise. The bacterium that causes the sexually transmitted disease is becoming resistant to some antibiotics. But somehow, penicillin has remained the best weapon against it.
The germs caused a urinary tract infection in a Pennsylvania woman that was difficult to treat. The bacteria were resistant to the drug often used as the last-ditch treatment, but another one worked.
Most antibiotics can't tell the difference between good and bad bacteria. That means medicines can kill helpful bacteria in your gut while they're obliterating the ones making you sick.
The medication is the only one available to prevent an infected pregnant woman from passing the disease to a fetus. Pfizer says the shortage should be over in July.