According to CA, the leading option was still to play the match from January 7 to 11 in Sydney but if not, swapping the third and fourth Tests between Sydney and Brisbane was the top alternative
Australian cricket officials were put on high alert last week after an outbreak of the virus in the northern beaches in Sydney, which will host the third Test from January 7.
A cluster of Covid cases in Adelaide prompted other states like Western Australia, Tasmania and the Northern Territory to close their borders with South Australia and impose a 14-day hotel quarantine on all visitors from Adelaide
"I'd like to thank my family, my parents Pauline and Jim, and my wife Rhiannon who have supported me through the journey," Ferguson said in a statement.