มาลา, ร่ม, เข็มฉีดยา, เครื่องหมายคำถาม, ไวรัส, วัคซีน, การฉีดวัคซีน, การป้องกัน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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