Robin Roberts is at home relaxing after being hospitalized with an infection. Credit: Michael Stewart/

Robin Roberts' absence from Good Morning America this week was health related. The 52-year-old anchor, who underwent a bone marrow transplant in September, revealed in a Facebook message Thursday, April 18 that she was recently hospitalized with an infection.

She began her post by saying, "My heart continues to go out to the remarkably strong people of Boston. We stand by you now and always. It saddens me that I haven't been able to join my colleagues in covering this important story."

"Last week, in the middle of my Key West vacation, I began not to feel well. Nothing serious, just under the weather. I contacted my doctors and flew back to NYC," she explained. "They felt it best to admit me into the hospital for a few days. Seems my young immune system needed a little boost to fight off 'opportunistic infections.'"

But Roberts emphasized that the infection was not related to pushing herself too hard, and she's on the mend. (Roberts returned to GMA in February after a six-month leave to undergo the surgery after being diagnosed with the rare blood disorder, myelodysplastic syndrome.)

"It's extremely common, post bone marrow transplant, to have complications. I'm blessed that mine have not been severe," she explained. "I'm feeling MUCH better, and will relax at home for the rest of the week. I'll be back on GMA next week . . . as my sweet momma would say: 'Good Lord willing, and the creek don't rise!' Miss you and bless you."