New efforts are under way to replace the COVAX vaccine deliveries from India's Serum Institute that were diverted to help the country battle its surge, with signs that mRNA vaccine makers will add more doses to help expand the global reach of immunizations.At a briefing today, however, the World Health Organization's (WHO's) top official said ongoing surges in India and Brazil are a reminder that many countries are still, with vaccines part of the answer, but not the only answer."We call on everyone to continue to follow WHO and national advice on keeping safe: maintain physical distance, avoid crowds, wear a well-fitted mask that covers the nose and mouth properly, open windows, cover coughs and sneezes and clean your hands," said WHO