the red semaphore light with biohazard warning symbol covid containment concept |
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| navigate by keyword : abstract alert area attention awareness banner biohazard biological caution control corona coronavirus covid19 danger dangerous design disease epidemic forbidden hazard health hospital icon illuminated infected infection information light message outbreak pandemic prohibited quarantine red risk rotection safety security semaphore sign signal stop symbol traffic transportation treatment viral virus warning yellow |
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| The red semaphore light with biohazard warning symbol, Coronavirus containment concept |
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