From: entekhab.ir
Subject: کشف مهم محققان چینی: 2 نوع کرونا وجود دارد؛ ویروس تهاجمی تر با شیوع گسترده تر و ویروس خفیف تر با شیوع کمتر /  شیوع نوع L از اوایل ماه گذشته میلادی کاهش یافته است
Date: Tue, 21 Apr 2026 02:00:54 +0330
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