Punjab's Health and Family Welfare Director Sukhdev Singh said that no death had been reported in the state due to dengue.
A dozen patients from Punjab and Haryana have so far come to hospitals in Chandigarh for treatment.
Doctors in Himachal Pradesh were on alert after the first case of dengue was detected in the hill state late Wednesday.
The Bihar government decided to set up a dengue detection centre at the Patna airport as well as at all railway stations in the state capital.
"Chief Minister Nitish Kumar is monitoring the situation and has asked top officials to take urgent steps to prevent the spread of the disease," an official said. The state government sounded a dengue alert Wednesday.
The dengue patients in Patna include two doctors, Abhijit Singh and Jyoti Ranjan.
The viral disease was spreading in Madhya Pradesh since Bhopal district reported the first dengue death Sep 29. The deceased, Kishore Singh Thakur of Bina district, was brought to Bhopal for treatment Sep 12.
Moreover, chikungunya, a relatively rare form of mosquito-transmitted viral fever, has already assumed epidemic proportions in Madhya Pradesh with about 30 people dead and over 200,000 estimated to be infected in more than half a dozen districts, health department officials said.
In Karnataka, the Health and Family Welfare Department intensified surveillance in capital Bangalore and select districts to prevent the outbreak of dengue fever and chikungunya.
"The situation in Karnataka is under control. We have stepped up anti-mosquito and anti-larva measures in susceptible areas to prevent dengue. Extensive fumigation and spraying of chemicals have contained the spread of chikungunya," H.C. Ramesh, joint director for malaria and falaria, told IANS.
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