Novak Djokovic makes his eagerly anticipated return to the Australian Open on Tuesday and women's world number two Ons Jabeur will also launch her title bid.

Novak Djokovic said "it is what it is" Thursday as he faced the prospect of missing more tournaments in the United States over his refusal to have a coronavirus shot.

Health officials today urged people to take caution, including taking booster jabs and wearing masks in crowded areas, as the national advisory committee alerted for a potential new variant that already swept China and has been detected in India.

A special campaign for administering fourth Covid vaccine dose will start on December 20.

Top seed Novak Djokovic produced a stellar display to sweep aside Croatian Marin Cilic 6-3 6-4 in the final of the ATP 250 Tel Aviv Open on Sunday and clinch his third title of the season.