Leaders flock south for medical care at taxpayers' expense as country's healthcare sector founders.
Ten candidates are on Zambia's presidential ballot, but only Rupiah Banda and Michael Sata are considered contenders.
Zambia's two main opposition political parties have merged in a bid to remove the ruling MMD from power in 2011 elections, it was reported on Friday.
A court in Zambia on Tuesday sentenced former president Fredrick Chiluba's wife, Regina, to three-and-a-half years in prison for fraud.
Former Zambian army commander Geojago Musengule has been sent to prison for four years for corruption and abuse of power, said reports on Tuesday.
Rumours of irregularities may affect the outcome of the Zambian election, writes Robert Chisanza.
Zambians vote on Thursday to name a successor to the late president Levy Mwanawasa, in a contest between a retired diplomat and a populist.
Zambia's acting President Rupiah Banda on Friday called for peace and unity ahead of next week's presidential elections.
Political analysts believe that Rupiah Banda, the presidential candidate for the governing Movement for Multi-Party Democracy, will be easily elected.
Zambia's ruling party on Friday elected the country's vice-president, Rupiah Banda, as its candidate for an upcoming presidential vote.
After Zambia's President Levy Mwanawasa was buried in the capital Lusaka on Wednesday, the spotlight immediately shifted to succession campaigns.
Zambia's ruling party met on Friday to select a candidate for a presidential election to choose a successor to late President Levy Mwanawasa.
Mugabe this week gave Morgan Tsvangirai until Thursday to sign the proposed power-sharing agreement.
Southern Africa leaders gathered in Zambia on Wednesday at the funeral of President Levy Mwanawasa, who died in a French military hospital last month.
Zimbabwe President Robert Mugabe has paid a glowing tribute to the late Zambian President Levy Mwanawasa, his arch-critic, for his "courage".
Even before the president, who died on August 19 in Paris, is buried and his mourning period is over, the search for his successor has started.
Zambia will prevent officials accused of corruption from contesting elections as the country starts to find a successor for President Levy Mwanawasa.
Thousands of Zambians mourned President Levy Mwanawasa on Saturday when his body was returned home after he died in France five days ago.
Zambia faces uncertainty after the death of Levy Mwanawasa earlier this week, writes Robert Chisanza.
Zimbabwe President Robert Mugabe has expressed sorrow at the death of Zambian leader Levy Mwanawasa, one of his most outspoken critics.