There are four globally endemic human coronaviruses which  together with the better known rhinoviruses  are responsible for causing common colds Usually  infections with these viruses are harmless to humans DZIF professor Christian Drosten  Institute of Virology at the University Hospital of Bonn  and his research team have now found the source of HCoV-229E  one of the four common cold coronaviruses--it also originates from camels  just like the MERS virus