According to the Health Ministry data, 1,809 persons have perished due to the disease while the number of those affected across various states was 30,766.
Dr Randeep Guleria, head of Pulmonary Medicine Department at AIIMS, said that swine flu cases will subside in the next 2-3 weeks because of soaring mercury.
"Over the last few days, though the temperature has been fluctuating due to unseasonal rains, but on an average it has shown an upward trend, because of which cases are on decline. Even in OPD we are seeing less patients.
He said swine flu cases tend to rise during winter and monsoon months and also when humidity levels are high.
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Other doctors pointed out that although there has not been any "dramatic" decrease, they hoped that the cases will decrease with the rise in temperature.
"Even in OPDs these days most cases are of seasonal flu, which will hopefully decrease with the rise in temperature," said Dr Sidharth Ramji, medical superintendent, Lok Nayak Hospital.