Ten years after the outbreak of Severe Acute Respiratory Syndrome coronavirus (SARS- CoV), which caused the first large-scale epidemic of the 21st century, a novel human coronavirus becomes identified, posing another threat to global public health.
These viruses were originally transmitted from animals to people.
SARS, for instance, was transmitted from civet cats to humans while MERS moved to humans from a type of camel.
Several known coronaviruses are circulating in animals tha.