several vials of sars-cov-2 strain samples from mojiang and yunnan in research lab

antibiotics antibodies antibody concept conceptual contagious coronavirus cov covid dangerous dead death diagnosis die epidemic experimental human illness image infect infection infectious influenza lab laboratory medical medication medicine mojiang new pandemic patient pharmaceutical pneumonia ratg research respiratory rpyn samples sarscov sarscov2 science several sickness strain symptoms syndrome testing toxic treatment vaccine variant venom vial vials viral virology virus yunnan