SENEGAL is trying to acquire coronavirus vaccines to complement those it will get through the World Health Organization-backed global COVAX scheme, Health Minister Abdoulaye Diouf Sarr has told reporters. Senegalese President Macky Sall this week announced a state of emergency to deal with a surge in infections. Senegalese President Macky Sall Unlike Europe, the United States and China, where large-scale vaccination campaigns are underway, most African countries have so far been unable to secure vaccine supply deals with drug companies. That has left some of the world's poorest countries relying on the COVAX alliance, which says it has reached agreements…