sars-cov-2 wallpaperProviderpixabayResolution5490 × 3660Aspect ratio1.50:1Authorpearson0612SourceOpen original page Download wallpaper Available sizesPreview150 × 100Web640 × 427Large5490 × 3660Tagssars-cov-2covid-19virusvaccinecoronavirusdiseasesinovac疫苗科兴