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VirusDisease

, Volume 27, Issue 2, pp 130–135 | Cite as

The emergence and consistency of influenza strains causing influenza like illness in Himachal Pradesh, India

  • Arti BharmoriaEmail author
  • Vipin Behari Vaish
  • Ashish Chaurasia
  • A. K. Tahlan
Original Article
  • 75 Downloads

Abstract

The present study offers the status of ongoing surveillance influenza at National Influenza Surveillance Centre (NISC), Central Research Institute (CRI), Kasauli for the emergence and consistency of influenza strains for current as well as over a period of three decades in Solan, Himachal Pradesh. From 1980 to 2015, various clinical centers of Himachal reported counts of influenza-like illness (fever including cough or sore throat). During these years, the respiratory specimens of 6581 patients showing influenza-like illness were collected. The incidence of visits had been calculated for influenza-like illness using the size of the patient population, and the incidence attributable to influenza was extrapolated from the proportion of patients with positive tests. Up to 2008 the egg inoculation method was used for the isolation and detection of influenza strains but in 2009 a RT-PCR equipped, fabricated BSL-3 laboratory was implanted at CRI for the isolation and detection of influenza strains. The reagents, primers and probes were supplied by NCDC, Delhi. Since 1980, 319 influenza isolates has been identified and isolated at NISC. Among these 282 were isolated by egg propagation method while 37 were processed by RT-PCR. Influenza incidence varied with age groups and by season after the pandemic of 2009 influenza A, H1N1. High levels of influenza virus circulation, especially in young children, emphasize the need for additional efforts to increase the uptake of influenza vaccines and anti-virals.

Keywords

H3N2 H1N1 Influenza National Influenza Surveillance Centre (NISC) RT-PCR Surveillance Central Research Institute (CRI) Himachal, India 

Notes

Acknowledgments

The authors would like to thank the staff members of National Influenza Surveillance Centre, Central Research Institute, Kasauli, District-Solan, Himachal Pradesh, for their technical support during this research work.

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Copyright information

© Indian Virological Society 2016

Authors and Affiliations

  • Arti Bharmoria
    • 1
    Email author
  • Vipin Behari Vaish
    • 1
  • Ashish Chaurasia
    • 1
  • A. K. Tahlan
    • 1
  1. 1.National Influenza Surveillance CentreCentral Research InstituteKasauliIndia

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