Question

what is the alarming situation related to these disease​

Answer 1

alarming is a new virus

There is always concern when a new pathogen emerges in people because they typically lack immunity to it and there usually aren’t specific treatments or vaccines available. Novel coronaviruses, those not seen in humans before, represent a particular concern because they have been known to spark complicated outbreaks that have sickened thousands of people, like SARS did as it swept across the globe from southern China.