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WHO backs AstraZeneca COVID vaccine amid clotting concerns; green lights Johnson & Johnson shots | UN News
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Scientists exploring possible link between Johnson & Johnson, AstraZeneca vaccine blood clot issues - ABC News
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A mix-and-match approach to COVID-19 vaccines could provide logistical and immunological benefits | PBS NewsHour
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AstraZeneca's vaccine contract with the UK is based on 'best efforts,' just like its deal with a frustrated EU | CNN
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Europe won't renew AstraZeneca, Johnson & Johnson COVID-19 vaccine contracts next year: report | Fierce Pharma
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Concerns over rare clotting disorders halt use of Johnson & Johnson's COVID-19 vaccine | Science | AAAS
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