No mismatch between circulating flu strains and vaccine strains
On March 7 and March 8, several newspapers reported a surge in influenza cases in the Delhi-NCR region, with some mentioning the “spike” as over 54%. According to NCDC’s Integrated Disease Surveillance Programme data posted on February 27, 2025, there were 516 influenza cases and six deaths in January this year. Acute respiratory infection surveillance between 2016 and 2018 by six centres spread across India found 15.4% cases were influenza, whereas 12.7% of severe acute respiratory infection cases were influenza. By modelling ‘excess’ deaths using death data from the Sample Registration System and virological data from the influenza surveillance network of 10 labs across eight States from 2010-2013, a June 2020 paper estimated a mean of 1,27,092 influenza-associated respiratory and circulatory deaths per year in India. Yet, according to the May 2018 guidelines for influenza vaccination issued by the Health Ministry, influenza vaccine is only considered “desirable” for people older than 65 years and children below five years.
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