NAIROBI, Jan 28 (Reuters) – The following company announcements, scheduled economic indicators, debt and currency market moves and political events may affect African markets on Thursday. – – – – – EVENTS: ZAMBIA- Monthly inflation data due to be released GLOBAL MARKETS Asian shares pushed back into the black on Thursday as investors dipped their toes back into equities and demand for safehaven assets such as the yen and sovereign bonds faded. WORLD OIL PRICES U.S. c