With COVID-19 vaccines currently in scarce supply, the head of the World Health Organization (WHO) on Friday pressed governments to prioritize inoculation of health workers and older persons, and to share excess doses with other nations. With COVID-19 vaccines currently in scarce supply, the head of the World Health Organization (WHO) on Friday pressed governments to prioritize inoculation of health workers and older persons, and to share excess doses with other nations. Read MoreUN News – Health