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نتائج ايجابية ضد البديل الجنوب افريقي

أصدرت شركة التكنولوجيا الحيوية الأمريكية Moderna النتائج الإيجابية الأولى فيما يتعلق باختبارات نسخة معدلة من لقاحها ، والتي تم تطويرها خصيصًا ضد سلالة جنوب إفريقيا من فيروس كورونا الجديد.

شارك أربعون شخصًا تم تطعيمهم بالفعل ، أي تلقوا جرعتين من لقاح موديرنا الأصلي بين ستة وثمانية أشهر قبل هذه التجارب.

تلقى البعض جرعة ثالثة من تركيبة جديدة (تسمى mRNA-12731351) تم تطويرها ضد سلالة جنوب إفريقيا من الفيروس التاجي الجديد ، بينما تلقى البعض الآخر جرعة ثالثة من اللقاح الأصلي.

أفادت موديرنا أن هذين الخيارين “زادان من مستويات الأجسام المضادة المعادلة ضد السارس- CoV-2 واثنين من أكثر سلالاته إثارة للقلق”.

تم قياس مستويات الأجسام المضادة في المشاركين بعد أسبوعين من الإعداد الثالث. وقالت الشركة إن هذه “زادت إلى مستويات مماثلة أو أعلى” من تلك التي تم العثور عليها بعد السلسلة الأولى من جرعتين.

تضيف موديرنا أن صيغة اللقاح التي تم تطويرها خصيصًا ضد السلالة الطافرة التي تم تحديدها لأول مرة في جنوب إفريقيا أثبتت أنها أكثر فعالية ضدها من اللقاح الأصلي.

‫196 تعليقات

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