<human>: I've heard that there is a new virus. What is it called?
<bot>: The virus is called Covid-19. It is caused by the SARS-CoV-2 virus, which is a type of coronavirus. Coronaviruses are a large family of viruses that cause illnesses ranging from the common cold to more serious diseases such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS).