male scientist in ppe suit working in lab while pouring solution from erlenmeyer flask to erlenmeyer flask with caution.

2019ncov analysis bio biohazard blood blue caution china chinese clinic clinical container corona coronavirus covid19 death diagnosis diagnostic disease doctor epidemic erlenmeyer flask flu focus hand hazard health hospital illness infection lab laboratory lung male mask medical medicine microbiology outbreak pandemic patient pneumonia positive pouring ppe research sample sarscov2 scientific scientist sick solution suit test theme tone treatment tube vaccine virology virus while working