By Masimba Makwembere makwemberemv@dailynews.co.zw ZIMBABWEAN born medical expert Patrice Matchaba has been appointed chief executive officer of the United States’ Bill & Melinda Gates Medical Research Institute (Gates MRI). Matchaba, who hold South Africa and the US citizenships, would commence his new role on June 10, taking over from Emilio Emini who is going on…

