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Delhi Reports Sharp H1N1 Surge as Authorities Step Up Surveillance

ICMR genomic analysis finds no new H1N1 strain.

Overview

  • Delhi logged 114 H1N1 cases on Thursday, taking this season’s influenza-A total to about 2,600 and H1N1-confirmed infections to roughly 1,777.
  • Union health minister J.P. Nadda held a national review and the Delhi government placed 35 hospitals under special surveillance while directing clinical and reporting guidelines to district officials.
  • AIIMS and the National Centre for Disease Control have been named referral laboratories to expand testing and genomic monitoring and daily case tracking is being routed through IDSP/IHIP.
  • ICMR scientists report the circulating virus belongs to the A/Missouri/11/2025-like H1N1 clade, no novel strain has been found, and current Northern Hemisphere vaccine strains remain a match.
  • Clinicians say most infections are mild but some patients have severe illness and household transmission has risen, so officials urge respiratory hygiene, prompt testing for worsening symptoms, and extra protection for young children, the elderly and people with comorbidities.