Health authorities in Canterbury say the current wave of swine flu appears to have peaked there.
Canterbury District Health Board says it is estimated about a quarter of the region's population has now had swine flu.
The board says the number of people with swine flu is declining, and the flu centres that have operated in the region will be gradually closed over the next two weeks.
While the number of cases has diminished, the virus hasn't gone away, the DHB says, and could come back in a second wave.
The DHB says doctors will be consulted before the flu centres are closed to ensure they are able to deal with patients who still need treatment.
The latest update from the national flu surveillance network shows a continuing decline in the number of people seeing their doctor. The highest levels of visits are recorded in Southland, Hutt Valley and Otago.