Idiopathic thrombocytopenic purpura (ITP), a condition that affects the blood by low platelet count, may be associated the Oxford-AstraZeneca COVID vaccine in rare cases.
A new study in Scotland has found the Pfizer vaccine is not associated with a condition that affects the blood, and other clotting and bleeding events.
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A condition that affects the blood, known as idiopathic thrombocytopenic purpura (ITP), may be associated the Oxford-AstraZeneca vaccine in rare cases, research suggests.
The very small increased risk of the condition - which is characterised by low platelet counts - is estimated to be 11 per million doses, similar to figures seen in vaccines for flu and MMR.
A low number of platelets - blood cells that help prevent blood loss when vessels are damaged - can result in no symptoms or can lead to an increased risk of bleeding or, in some cases, clotting.
Researchers say that the increased chance of developing ITP after receiving the vaccine remains smaller than the risk of developing it because of Covid-19 and should not deter the roll out of the vaccine programme.
NSAIDs Don t Make COVID-19 Worse in Hospitalized Patients medscape.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from medscape.com Daily Mail and Mail on Sunday newspapers.
No link between NSAIDs, more severe COVID-19 Disclosures:
The researchers report support from the National Institute for Health Research (NIHR), the Medical Research Council, the NIHR Health Protection Research Unit (HPRU) in Emerging and Zoonotic Infections at University of Liverpool, NIHR HPRU in Respiratory Infections at Imperial College London, NIHR Biomedical Research Centre at Imperial College London, and NIHR Clinical Research Network. Drake reports no additional disclosures. Please see the study for all other authors’ relevant financial disclosures.
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