Zanzibar’s First Vice President Seif Sharif Hamad, 77, who had been undergoing treatment for COVID-19 in hospital, has died, the government announced Wednesday. Husein Mwinyi, the president of the semi-autonomous island region of Tanzania, East Africa, announced seven days of mourning with the flag flown at half-staff. He said he had learned “with great sadness [of] the death of Seif Sharif Hamad.” The cause of death has not been made ...