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

2019ncov analysis bio biohazard blood blue china chinese clinic clinical container corona coronavirus covid19 cylinder death diagnosis diagnostic disease doctor epidemic erlenmeyer flask flu 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 sign solution suit test theme tone treatment tube vaccine virology virus while working