"The healthcare worker is not interested in speaking to media at this time and wants to focus on her recovery and getting back to everyday life," said the CDHB statement.
"She says she would like to thank all of those involved in her care to date, as well as the public for their concern and interest in her wellbeing.
"However, the healthcare worker is still under contract to the Australian organisation, which arranged her mission to Sierra Leone, and as part of that contract she is unable to make any further comment or statements.
"She asks if her privacy can be respected at this time."
Mrs McBain returned to New Zealand from the Ebola-stricken west African country of Sierra Leone on March 8.
Southern DHB medical officer of health Dr Marion Poore said the work she had done was in dangerous and trying conditions.
"Southern DHB commends the great work Bronwyn McBain has done, and the work which all the volunteers are doing in Sierra Leone to support their population health needs at a time of crisis," Dr Poore said.
Dr Poore said mother-of-two Mrs McBain, who previously helped in a tsunami ravaged region of Sumatra in 2005 and spent time nursing in Vanuatu in 2004 at her own cost, will be welcomed back to work whenever she is ready.
"Southern DHB appreciates and commends her commitment to this international crisis," Dr Poore said.
"Southern DHB is offering support for Bronwyn and family as required."
Former New Zealand prime minister Helen Clark, and current head of the UN Development Program, said Kiwi health care workers in Sierra Leone have been doing "an incredible job" supporting the local health service response to Ebola.
