the term sars-cov2 with hashtag. very fast spreading term in network.

2019 attention bacteria biohazard breaking card caution centre china chinese concept contagion contamination corona coronavirus covid covid19 dangerous detected disease europe fast france germany global hashtag healthcare hospital infected infection information italia italy medic medical ncov network news outbreak pandemia patogenic pneumonia protection quarantine sarscov2 sign spreading term usa vaccine very virus white word wuhan