สุขภาพ, ทางการแพทย์, ฝ้าย, ขาว, การวินิจฉัยโรค, โควิด, โควิด -19, ไวรัสโคโรน่า, ใกล้ชิด, ภูมิหลัง, ขนสัตว์
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