As COVID-19 cases spike in parts of Europe, Africa and the Americas, and new variants of the virus emerge in some countries, the head of the World Health Organization (WHO) on Friday called for greater global collaboration in ending the pandemic.  As COVID-19 cases spike in parts of Europe, Africa and the Americas, and new variants of the virus emerge in some countries, the head of the World Health Organization (WHO) on Friday called for greater global collaboration in ending the pandemic.  Read MoreUN News – Health