coronavirus covid-19 public poster with a red warning triangle and the text in estonian `kanna maski`

area attention black caution corona coronavirus covid covid19 danger drawn dust epidemic estonian face facemask flat flu graphic hand head health healthy human hygienic icon illustration infection info infographic information instruction kanna mark mask maski measure medical notice person please pollution poster prevention print product protection public quick red required respiratory safe safety sign simple style surgical symbol text triangle vector virus warning wear wearing written