Studies show that nearly a quarter of patients over 60 are not offered aggressive therapy aimed at long-term remission because of concerns about co-morbid disease.

CNN: Are there any treatments for acute myelogenous leukemia?

"Prompt antiviral therapy in newborns that begins within days of exposure may help infants clear the virus and achieve long-term remission without lifelong treatment by preventing such viral hideouts from forming in the first place, " Persaud said.

CNN: Researchers: Toddler cured of HIV

"Prompt antiviral therapy in newborns that begins within days of exposure may help infants clear the virus and achieve long-term remission without lifelong treatment by preventing such viral hideouts from forming in the first place, " Persaud says.

CNN: Researchers: Toddler cured of HIV