Twenty activists from the Movement for Democratic Change opposition party have been abducted since October. Their whereabouts are still unknown.
Disease is the latest sign of breakdown in the most basic government services. As the problem spreads, neighboring nations may increase pressure on Mugabe to step down.
Leaders from Southern Africa began emergency talks in Swaziland on Monday.
The Mo Ibrahim Index announced this week that 31 of 48 countries are run better.
A McCall Smith-like romance set in Kenya's expat community.
Critics decry slashing of agricultural aid as US tries to balance competing foreign relief priorities.
Zimbabwe's opposition rejects calls for a unity government, however, citing perceived bias of mediator, South African President Thabo Mbeki.
The second round of presidential voting was marked by violence and intimidation. Voters could vote only for President Mugabe.