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تجربة التحدّي CHALLENGE TRIAL

1 دقيقة

تنطوي تجربة التحدي على إعطاء اللقاح لمجموعة من المتطوعين ثم نقل العدوى إليهم عمداً لاختصار عدة شهور من مراحل اختبار لقاح محتمل لمرض ما.
وقد تم استخدام تجارب التحدي في تطوير العديد من اللقاحات لأمراض الحصبة والحمى والصفراء والملاريا والكوليرا. لكن اللجوء إليها لتطوير لقاح مضاد لكوفيد-19 قد أثار الكثير من الجدل بين المؤيدين لهذه الفكرة والمعارضين لها.

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