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26 May 2021 1:47 PM | Anonymous member (Administrator)

On behalf of HSANZ President Leanne Berkahn and Vice President Steven Lane,  this note is being shared from THANZ.

Dear colleagues,

Amidst the community concerns regarding COVID and COVID vaccination, some of us have noted cases of thrombocytopenia following COVID vaccination. Although immune thrombocytopenia (ITP) has been described in the medical literature following mRNA vaccines (Pfizer), we are now accumulating local experience with this phenomenon after AstraZeneca vaccination. 


We are now LIVE with an online HREC approved REDCap registry to collect de-identified data on the presentation and clinical outcome of cases that you believe may represent an immune thrombocytopenia (Vaccine Induced ITP) following any COVID vaccination (Pfizer, AstraZeneca, etc). Some of these cases may occur as a relapse in patients with a prior history of ITP. Many cases may be de novo. Some patients may even share features with VITT/TTS (Vaccine Induced Immune Thrombosis and Thrombocytopenia). We would like to collect information on any of these presentations.


Please do not hesitate to contact us directly

Phil Choi ; Robert Bird or via THANZ with any queries. The link below requires no special software, and can be accessed and answered from your mobile device. So far it has taken clinicians less than 5 minutes to complete! All contributions will be acknowledged in any publications ensuing.


Dr Phil Choi (ACT) and Professor Robert Bird (Qld)

On behalf of the THANZ Vaccine Induced Immune Thrombocytopenia Working Group, and ISTH Platelet Immunology Subcommittee



Haematology Society of Australia and New Zealand (HSANZ)
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Tel: 02 8097 8114


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