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مختبر أميركي: نتائج إيجابية بمرحلة أولى من تجارب لقاح كورونا.. و”وول ستريت” تقفز عند الفتح بفضله

أعلنت شركة “موديرنا” الأميركية، اليوم الاثنين، عن “معطيات مؤقتة إيجابية” في المرحلة الأولى من التجارب السريرية على مشروع لقاح ضد فيروس كورونا المستجد تمت تجربته على عدد صغير من المتطوعين، فيما قفزت بورصة “وول ستريت” عند الفتح بفضل هذا الإعلان.

وجاء في بيان صادر عن المختبر أن اللقاح الذي أُطلقت عليه تسمية “إم آر إن ايه-1273″بدا كأنه يثير استجابة مناعية لدى ثمانية أشخاص تلقوه، بنفس حجم الاستجابة التي يمكن رؤيتها لدى الأشخاص الذين أُصيبوا بالفيروس.

ولم تُعرف بعد النتائج الكاملة للمرحلة الأولى من تطوير اللقاح والتي تضم 45 مشاركاً في الوقت الحالي.

وصرّح تال زاكس، المدير الطبي لشركة موديرنا، أن “هذه المعطيات المؤقتة من المرحلة 1، رغم أنها أولية، تبيّن أن اللقاح إم آر إن ايه-1273 يؤدي إلى استجابة مناعية بالحجم نفسه لتلك التي تثيرها العدوى الطبيعية”.

وتجري معاهد الصحة الوطنية في الولايات المتحدة التجربة السريرية، وتستثمر الحكومة الأميركية نحو نصف مليار دولار في مشروع “موديرنا”.

وتلقت ثلاث مجموعات، يتألف كل منها من 15 مريضاً، ثلاث جرعات مختلفة من اللقاح، مرة واحدة أو مرتين.

ويُفترض أن تبدأ قريباً المرحلة الثانية التي تشمل عدداً أكبر من الأشخاص، وفق موديرنا، فيما يُتوقع أن تبدأ المرحلة الثالثة، وهي الأخيرة والأهمّ للتحقق من فعالية اللقاح، في تموز/يوليو المقبل.

وأوضحت الشركة أن اختبارات أُجريت بشكل منفصل على فئران، أثبتت أن اللقاح يمنع الفيروس من الوصول إلى الرئتين.

وقال رئيس الشركة ستيفان بانسيل إن “فريق موديرنا يواصل التركيز على إطلاق التجربة الأساسية خلال المرحلة الثالثة في تموز/يوليو في أسرع وقت ممكن وفي الشكل الأكثر أماناً”.

المصدر

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