covid biohazard warning poster danger and caution signs coronavirus outbreak stay away from the zone |
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| navigate by keyword : 2019 alert area attention bacteria bio biohazard biologic biological caution contaminated coronavirus covid danger dangerous entry environment forbidden hazard icon lab label laboratory medical ncov notice outbreak protect protection research restricted risk safety sign signal symbol toxic vector virus warn warning yellow |
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| Covid-19 Biohazard warning poster. Danger and biohazard caution signs. Coronavirus outbreak. Stay away from the danger zone. No entry. Disease prevention, control and management. Safety sign. |
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