OMAR MOHAMMED TANZANIA hopes to join the COVAX global vaccine-sharing facility, the latest sign it has changed tack following the death in March of COVID-19- and vaccine-sceptic president John Magufuli. A World Health Organisation official said vaccines could arrive in the country of 58 million people within two weeks. Since taking office in March, new president Samia Suluhu Hassan has sought to gradually bring Tanzania into line with global public standards for tackling COVID-19. The country is one of only four in Africa that have yet to start vaccination campaigns, according to the Africa Centres for Disease Control and Prevention.…