World number one Novak Djokovic has announced that he will defend his Australian Open title at Melbourne Park this month after receiving a medical exemption from getting vaccinated against Covid-19.

Djokovic, who had declined to reveal his Covid-19 vaccination status, said previously that he was unsure whether he would compete at the Grand Slam due to concerns over Australia's quarantine rules.

"Happy New Year, everybody. Wishing you all health, love, and happiness in every present moment and may you feel love and respect towards all beings on this wonderful planet," the Serbian player said on Instagram.

"I've spent fantastic quality time with my loved ones over the break and today I'm heading Down Under with an exemption permission. Let's go 2022."

Organisers of the Australian Open had stipulated that all participants must be vaccinated against the coronavirus or have a medical exemption granted by an independent panel of experts.

Tennis Australia (TA) said the 34-year-old Djokovic had applied for a medical exemption which was granted after a "rigorous review process" involving two separate independent panels of medical experts.

"One of those was the Independent Medical Exemption Review Panel appointed by the Victorian Department of Health," TA said in a statement.

"They assessed all applications to see if they met the Australian Technical Advisory Group on Immunisation (ATAGI) guidelines."

Australian Open Tournament Director Craig Tiley said in the TA statement that "fair and independent protocols" had been established for assessing medical exemption applications to ensure the Australian Open was safe.

"Central to this process was that the decisions were made by independent medical experts and that every applicant was given due consideration," Tiley said.

Djokovic's father Srdjan had told a Serbian television channel that his son would probably pull out of the major, saying Tennis Australia's stance on mandatory jabs was tantamount to "blackmail".

But Djokovic pulled out of the Serbia team for the ATP Cup in Sydney to raise doubts over his participation in the year's first Grand Slam in Melbourne.

"I am ready to live and breathe tennis in the next few weeks of competition. Thanks everyone for the support,"

Djokovic added in his statement, which was accompanied by a picture of him in an airport.

Djokovic has won a record nine Australian Open titles, including the last three, and is in a three-way tie on 20 majors with Roger Federer and Rafa Nadal in the all-time men's tennis list.