Flu-like illness was reported by 19,279 patients, but testing for H1N1 using real-time reverse-
transcriptase–polymerase-chain-reaction (RT-PCR) assay was done in 11.1% only.
Percentage positivity of samples ranged from 17.34% in month of August to 44.70% in
December which is much higher in comparison to other countries with high population
density like Mexico which reported 13% positivity in their samples.(1) Percentage of H1N1+
requiring hospitalization was 2.13% which was similar to worldwide trends (2–5%).(2) In all …

The clinical and demographic characteristics of patients with H1N1 infection admitted in a
hospital in New Delhi, India, from May 2009 to May 2010 are described. Flu-like illness was
reported by 19 279 patients, but testing for H1N1 using real-time reverse-transcriptase-
polymerase-chain-reaction (RT-PCR) assay was done in only 11.1%. Percentage positivity
of samples ranged from 17.34% in the month of August to 44.70% in December. Clinical
characteristics of H1N1+ patients are compared with those who tested negative for H1N1 …