"In view of rains today morning and forecast by IMD, there is a possibility of water stagnation in containers and disposed of plastic and junk material, giving rise to breeding of aedes mosquitoes.
"It is advised that the vector-control measures need to be intensified to contain the problem of dengue. You are requested to instruct all officials and departments concerned to intensify the efforts," said the advisory issued by the Union Health Ministry.
The Health Ministry said that around 12 advisories have already been issued from March until August this year pertaining to dengue, including an advisory by Health Minister JP Nadda to all the state chief ministers in April, 2015.
"We are closely monitoring the situation and, hence, this advisory has been issued in the wake of the fresh spell of rains.
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"The ministry has been extending the required technical and financial support and assistance to the states to manage dengue and will continue to do so in order to strengthen them to address the recent upsurge," Nadda said.
The ministry also asked Delhi government to take action against any over-charging by private hospitals in treating dengue patients.
Also, Delhi government has been asked to expeditiously increase the bed strength at state hospitals for dengue patients, the official statement said.