มาลา, ทดสอบด่วน, การระบาดกระจายทั่ว, โควิด 19, ทดสอบ, การป้องกัน, สุขภาพ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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