However , the four viruses are detected in different parts of the world at different times of the year .
HCoV - 229E is one of the four human coronaviruses which include HC0V - NL63 , HCoV - OC43 , and HCoV - HKU1 and are globally distributed .
The four viruses are detected in different parts of the world at different times of the year .
HCoV - 229E is one of the four human coronaviruses which include HC0V - NL63 , HCoV - OC43 , and HCoV - HKU1 and are globally distributed .