Authorities on Monday said 18 people have died over the past week in Harare, and scores fallen ill after a cholera and typhoid outbreak in some areas.
With the help of worldwide agencies, the outbreak was controlled, and by July 2009, after no cases had been reported for several weeks, the Zimbabwe Ministry of Health and Child Welfare declared the outbreak over.
Residents in some Harare suburbs have gone for months without tap water, forcing them to dig shallow wells and boreholes that have been contaminated by raw sewage flowing from burst pipes.
He said the ban affects both day and night vending and in this regard, police will intensify patrols and surveillance in the Harare CBD and will be out in full force to ensure compliance with the government directive without fear of favour.
World Health Organization is providing cholera kits which contain oral rehydration solution, intravenous fluids and antibiotics to cholera treatment centres.
The outbreak is confined in Harare's high density suburbs of Glen View and Budiriro but isolated cases stemming from the two suburbs have also been reported in other parts of the country.
The government has closed the schools temporarily and also banned the sale of meat and fish in the affected regions to combat the outbreak.
This was said by global rights group Amnesty International as the death toll from the latest cholera outbreak reached 21 countrywide. The disease is more common in developing nations and those that are densely populated and economically backward.
Cholera outbreaks have been a common occurrence in Zimbabwe due to the country's outdated water and sanitation infrastructure.
"It's more than just an emergency it is a national disaster", he said. Every death from cholera is preventable.
The Government of Zimbabwe has declared a state of emergency and is working with worldwide partners to rapidly expand recommended cholera response actions, including increasing access to clean and safe water in the most affected communities and decommissioning contaminated water supplies. "We are working tirelessly to control the situation and hope to communicate progress in due course".