Except Rohini and Paharganj, all other zones in the city reported fresh cases today, according to figures from all three MCDs.
Out of the 259, three cases have been reported from outside Delhi. A nine-year-old girl had died due to dengue last month.
The total number of chikungunya cases is six, including three from Delhi.
Last year, the capital saw 216 cases of dengue, including eight originating from outside, and three deaths. In 2010, there were 4,108 cases, including 24 from outside, and five deaths while the figures for 2009 were 29 dengue cases and no deaths.
In 2008, there were 550 dengue cases and two deaths.