Cuban state media released a message from Fidel Castro, the first communique said to be from the ex-leader since speculation over his health reached a fever pitch last week.
There were no new images of Castro, 86, released Wednesday.
He has not been seen since publicly since March when he met with Pope Benedict XVI during the pontiff’s visit to Cuba.
Castro’s usually frequent newspaper columns and musings suddenly ended in June. But his silence after the re-election of close ally Venezuelan President Hugo Chavez in October prompted many of his opponents to wonder whether Castro was again ailing or perhaps dead.