The health department in Limpopo, which borders on Zimbabwe, reported an increase in malaria cases in December in the Vhembe and Mopani districts.
Zimbabwe's malaria programme has suffered setbacks in control and research, said Richard Tren, director of Africa Fighting Malaria.
"For many years Zimbabwe had an excellent malaria control programme and now it is down to almost zero," he said....
But on the continent as a whole significant progress has been made in "scaling up coverage with key malaria control interventions" according to the latest report on the killer disease, World Malaria Day 2010: Africa Update.
Malaria costs Africa more than $40-billion a year in treatment and sick days - 247 million cases were reported in 2008.
"In 2008 malaria caused nearly one million deaths, mostly among African children," said the World Health Organisation.