Journal
VACCINES
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/vaccines10091444
Keywords
COVID-19 vaccine; BNT162b2 vaccine; mRNA-1273 vaccine; Ad26.COV2-S vaccine; ChAdOx1 nCoV-19 vaccine; thrombocytopenia; immune thrombocytopenia; ITP; immune thrombocytopenic purpura; idiopathic thrombocytopenic purpura
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A systematic review on patients with immune thrombocytopenia (ITP) after COVID-19 vaccination revealed a higher association with mRNA vaccines and promising outcomes without reported deaths.
With the recent outbreak of the COVID-19 pandemic and emergency use authorization of anti-SARS-CoV-2 vaccines, reports of post-vaccine immune thrombocytopenia (ITP) have gained attention. With this systematic review, we aim to analyze the clinical characteristics, therapeutic strategies, and outcomes of patients presenting with ITP after receiving COVID-19 vaccination. Medline, Embase, and Ebsco databases were systematically explored from inception until 1 June 2022. Case reports and case series investigating the association between the anti-SARS-CoV-2 vaccine and ITP were included. We found a total of 66 patients. The mean age of presentation was 63 years with a female preponderance (60.6%). Sixteen patients had pre-existing ITP. The mean time from vaccine administration to symptom onset was 8.4 days. More ITP events were triggered by mRNA vaccines (BNT162b2 (n = 29) > mRNA-1273 (n = 13)) than with adenoviral vaccines (ChAdOx1-S AstraZeneca (n = 15) > Ad26.COV2-S (n = 9)). Most of the patients were treated with steroids or IVIG, or both. The overall outcome was promising, with no reported deaths. Our review attempts to increase awareness among physicians while evaluating patients presenting with thrombocytopenia after receiving the vaccine. In our solicited opinion, the rarity of these events and excellent outcomes for patients should not change views regarding the benefits provided by immunization.
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