CSL producing a million AZ doses a week

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The Australian manufacturer of the AstraZeneca COVID-19 vaccine says it is now producing more than a million doses a week.

The high volume of vaccines has been reached for a number of weeks now and will be released into the community from mid-late May following quality checks, manufacturer CSL said on Saturday.

To date, 3.7 million AstraZeneca vaccines have been released into the community, but the millions more to come are being processed through a standard four-weeks of quality control.

The quality control process starts from the time the vials are filled and involves stringent tests conducted on each batch and undertaken by CSL, AstraZeneca and the Therapeutic Goods Administration.

"Manufacturing any biological product at industrial scale involves a high degree of fine-tuning to achieve optimal levels of production," CSL said in a statement on Saturday.

"CSL is proud of its ongoing role to support Australia's vaccination efforts and the team continues to work around the clock to produce safe and effective vaccines for the country."

The AstraZeneca jab is being rolled out for all Australians over 50 from May 3 at state-run vaccination centres and from GP clinics from May 17.

Some state centres in Victoria have been vaccinating anyone in that age bracket for more than a week.

AstraZeneca in Australia is recommended for use only in people over 50 because of extremely rare but serious blood clots.

The TGA and medical experts have been warning the public not to link blood clot deaths to vaccines without proof from medical experts amid rising vaccine hesitancy.