Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the chaty domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Deprecated: Return type of Recursive_ArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 76

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Deprecated: Return type of Recursive_ArrayAccess::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 202

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Deprecated: Creation of dynamic property Redux_Slides::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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دراسة "حاسمة" تكشف احتمال الإصابة بكورونا على متن الطائرة - Algerian Express

دراسة “حاسمة” تكشف احتمال الإصابة بكورونا على متن الطائرة


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كشفت دراسة صادرة عن وزارة الدفاع الأميركية، مؤخرا، أن خطر انتقال فيروس كورونا المستجد على متن رحلات الطيران منخفض جدا، فيما كان استئناف الملاحة الجوية حول العالم قد قوبل بتحفظ ومخاوف صحية.

وبحسب موقع شبكة “سكاي نيوز” البريطانية، فإن هذه الدراسة تحمل نبأ سارا لشركات الطيران التي تأثرت على نحو بالغ من جراء قيود الإغلاق.

وأورد الباحثون، أنه حينما يكون راكب الطائرة مرتديا للكمامة، فإن ما يقارب 0.003 في المئة فقط من جزيئات الهواء التي تتحرك في منطقة تنفسه هي التي تكون ناقلة للعدوى.

ووفق الدراسة، فإن نسبة نقل العدوى تظل في هذا المستوى المتدني جدا حتى وإن كانت مقاعد الطائرة مشغولة عن آخرها، وهذا معناه أن خفض الطاقة الاستيعابية ليس ضروريا على النحو الذي نتصوره.

وانطلقت الدراسة من فرضية وجود راكب واحد مصاب فقط على متن الطائرة، ثم قاست احتمال نقل المرض إلى آخرين، لكن الباحثين لم يأخذوا بالحسبان احتمال قيامه بالتحرك داخل الطائرة.

وتم إجراء التجربة على طائرتين تجاريتين، إحداهما من طراز “بوينغ 777” والأخرى “بوينغ 767″، وكشفت النتائج أن الكمامات ساعدت على تقليل خطر انتشار العدوى عندما يقوم شخص ما بالسعال، حتى وإن تعلّق الأمر بأشخاص قريبين منه.

وذكرت الدراسة أن أنظمة معالجة الهواء على متن الطائرة تتيح تصفية ما يقارب 99.99 في المئة من تلك الجزيئات في غضون ست دقائق فقط.

وقدّر الباحثون أن الشخص المعافى من العدوى يحتاج إلى السفر لمدة تصل إلى 54 ساعة على الطائرة مع شخص مصاب حتى يتلقى جرعة قادرة على الإصابة بالعدوى.

وقال كبير مسؤولي العملاء في شركة “يونايتد إيرلاينز” الأميركية، توبي إتكفيست، إن هذه الدراسة تكشف أن احتمال الإصابة بالفيروس خلال الرحلات يكاد يكون شبه منعدم.

وجرى تمويل الدراسة والإشراف عليها من قبل إدارة النقل التابعة لوزارة الدفاع الأميركية، وهي مؤسسة تقوم بتسيير رحلات تجارية لفائدة أفراد الجيش الأميركي وعائلاتهم.

واستغرقت الدراسة ما يزيد عن 6 أشهر كما حرصت على إجراء 300 فحص خلال 38 ساعة من الطيران و45 ساعة من الاختبارات على الأرض.

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