Australia investigates possible link of blood clot case to vaccine

Green light for AstraZeneca vaccine supplied through Covax

"On the basis of this ongoing review, the benefits of the vaccines against Covid-19 continue to outweigh any risks and you should continue to get your vaccine when invited to do so", the MHRA said.

The Australian Technical Advisory Group said there would be no change to the clinical guidance on the use of the AstraZeneca vaccine as a result of the EMA's findings. Still, countries are counting on the shot to help them exit the pandemic, and millions of doses have been administered across the region.

Canadian officials are expecting a shipment of vaccines from the COVAX facility next week, Paquette said, although, adding that the World Health Organization co-led initiative does not provide a delivery schedule.

The Netherlands is the latest country to restrict the rollout of the Oxford-AstraZeneca jab, after saying on Friday that it was suspending its use for people under the age of 60.

All appointments for those under-60s scheduled to receive the jab have been cancelled with immediate effect.

There were previously fears that Malaysia would discontinue its AstraZeneca programme following reports the vaccine caused blood clots.

It has reported 31 CVSTs and nine deaths out of 2.7 million people vaccinated.

When the EMA declared the vaccine "safe and effective", they resumed its use while investigations continued. In total, some 400,000 people were given the AstraZeneca vaccine during the period the problems were reported. Speaking to Reuters, the government's chief medical adviser said USA authorities had secured enough coronavirus inoculations to immunise the entire population and possibly administer booster shots in the autumn.

"This condition has presented as either a clot appearing in the brain or as thrombosis in other sites, including in the intra-abdominal venous systems", he said.

Estimates vary from around two cases per million people every year to almost 16 in every million in normal times and coronavirus itself may be causing them too.

The Therapeutic Goods Administration is investigating the man's case with expert input from counterparts in Europe and the United Kingdom, where a small number of similar cases have appeared in recipients of the AstraZeneca vaccine.

He said people should be particularly alert to severe and persistent headaches that occu between four and 20 days after the vaccination, which "are different to your usual pattern of headaches" and do not settle with paracetomol or other over-the-counter painkillers.

The UK has ordered seven vaccines and expects to receive 407 million doses - more than enough for every adult to receive two.