covid-19 biohazard warning poster. danger and biohazard caution signs. coronavirus outbreak. stay away from the danger zone. no

covid19 stop background science template line concept icon modern design graphic elegant art business health abstract technology blood micro luxury corona virus disease 2019ncov attention biohazard coronavirus caution dangerous infection laboratory epidemic warning outbreak sign medical symbol china vector danger care travel clinic decontaminate quarantine closed pulse wuhan covid-19 poster signs stay away zone entry eps10 teps10 echno echnology vec back backgr backgrou backgrounds poster signs outbreak zone entry eps10