Barry Humphries' health reportedly "worsened in the last week" before he was rushed to the hospital.
The 89-year-old, who is best known for his Dame Edna Everage character, recently underwent hip replacement surgery but was readmitted to St Vincent's Hospital in Sydney earlier this week due to complications.
His family have been by his side and it was revealed that he is currently in a "serious condition but kept comfortable".
According to reports, he was readmitted to the hospital as his "health has worsened in the last week."
"Barry won’t give up easily. Whether that’s a realistic goal, I don’t know," Barry added.
Entertainment editor Peter Ford told Australia's Channel Seven's Sunrise programme of the comedian's condition, adding there are "serious concerns"
He recently tweeted a clip from the show and wrote: "Statement to media due to be released shortly.
"At this moment Barry is in a serious condition but being kept comfortable. He's surrounded by family."
Peter also explained: "Barry has something marked on his calendar and that is to say he'll be back on stage before the end of the year.
"He's been travelling around the UK last year doing a one-man show, largely sitting in a chair and talking about the great characters he's created through the years.
"Whether that's a realistic goal for Barry, I don't know, but either way it's not over until it's over but I am told Barry's health has worsened in the last week."
Barry's family have recently broken their silence and released a statement on his wellbeing, which was read out on Australia's 10 News First.
The statement read: "Barry Humphries is currently in hospital receiving treatment for health issues.
"Barry would like to thank everybody for the support and good wishes he's received but would like more and more."
It continued: "He would also like to thank the wonderful doctors, nurses and staff at St Vincent's Hospital."
Meanwhile, Barry's wife Lizzie Spender told Sunday Morning Herald: "He's fine."
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