The appearance of the novel betacoronavirus SARS - CoV-2 represents a major threat to human health ,
and its diffusion around the world is causing dramatic consequences .
The appearance of the novel betacoronavirus SARS - CoV-2 represents a major threat to human health , and its diffusion around the world is causing dramatic consequences .
The appearance of the novel betacoronavirus SARS - CoV-2 represents a major threat to human health , and its diffusion around the world is causing dramatic consequences .