LATEST COVID-19 DEVELOPMENTS:
* Prime Minister Scott Morrison on Thursday chaired national cabinet where leaders agreed on a rejig of the vaccine rollout.
* Australians over 50 can get the AstraZeneca jab at state and territory facilities and GP respiratory clinics from May 3, before all GP clinics have them from May 17.
* The Pfizer jab will be restricted to Australians under that age, except for high-risk groups such as aged and disability care residents and workers.
* The number of repatriation flights from India will be cut along with the number of direct flights allowed to land in Australia.
* It will also be harder for Australians to be granted an exemption to travel to India, and COVID-19 test requirements will apply.
* The Asian giant recorded more than 314,000 cases in one day according to its most recent figures, the worst single day for any country during the pandemic.
* It comes as Western Australian authorities investigate how two returned travellers contracted the virus while in quarantine at Perth's Mercure Hotel.
* Genomic testing has revealed the virus spread from a couple who had returned from India to a mother and daughter from the UK who were staying across the corridor.
* Up to 40 returned travellers and an unknown number of staff at a Sydney quarantine hotel may have been exposed to the virulent South African strain of COVID-19.
* The potential quarantine breach was revealed by NSW Health on Wednesday night after three returned travellers who stayed at the Mercure Hotel in Sydney were diagnosed with the same South African strain of the virus.
* Adelaide Oval will welcome a capacity crowd from early next month following a further relaxation of COVID-19 restrictions in South Australia.
* The Victorian government will contribute $2.3 million to a study looking at "long COVID" effects and potential links between the disease and unborn babies.
* Labor leader Anthony Albanese visited a Melbourne nursing home on Thursday where no residents or staff have received their vaccine.
AUSTRALIAN VACCINATION NUMBERS:
* There have been 1,785,698 doses administered in the national COVID-19 vaccination rollout up to Wednesday, including 67,591 in the past 24 hours.
* Of the total, 1,089,775 have been administered by the Commonwealth (an increase of 50,628 in the past 24 hours).
* 900,454 have been issued in primary care (+44,845), and 189,321 in aged and disability facilities (+5,783).
* 695,923 have been administered by the states and territories, including 16,963 in the past 24 hours.
* 185,620 have been administered in NSW (+4185), 176,827 in Victoria (+4519), 131,128 in Queensland (+2573), 83,172 in Western Australia (+2510), 50,674 in South Australia (+1325), 31,396 in Tasmania (+823), 23,122 in the ACT (+503), and 13,984 in the NT (+525).
AUSTRALIAN CORONAVIRUS NUMBERS:
* Australia reported no locally acquired virus cases on Thursday. There were 24 new overseas-acquired cases in quarantine: nine in SA, seven in NSW, four in the NT, and two each in Victoria and WA.
* The national death toll is 910: Victoria 820, NSW 56, Tasmania 13, WA 9, Queensland 7, SA 4, ACT 3 (Two Queensland residents who died in NSW have been included in the official tolls of both states).
GLOBAL CORONAVIRUS NUMBERS:
* Cases: at least 143,863,870
* Deaths: at least 3,058,640
* Recovered: at least 82,438,019.
Data current as of 1730 AEST on April 22, taking in federal and state/territory government updates and Johns Hopkins Coronavirus Resource Centre figures.