1Professor, Department of Community Medicine, Cum Nodal Officer, National Vector Borne Disease Control Program and Integrated Disease Surveillance Project
2Professor and Head, Department of Community Medicine, Sri Guru Ram Das Institute of Medical Sciences and Research, Sri Amritsar
3District Epidemiologist, Civil Surgeon's Office, Amritsar
4Assistant Professor, Department of Community Medicine, Sri Guru Ram Das Institute of Medical Sciences and Research, Sri Amritsar
5Junior Research Fellow, Sri Guru Ram Das Institute of Medical Sciences and Research, Sri Amritsar
*Corresponding author: Dr. S L Mahajan Professor, Department of Community Medicine, Cum Nodal Officer, National Vector Borne Disease Control Program and Integrated Disease Surveillance Project, Sri Guru Ram Das Institute of Medical Sciences and Research, Sri Amritsar, E-mail: slmahajan123@gmail.com Phone: 09915589173, 09356005909
Online published on 11 April, 2017.
WHO on 11 June 2009 raised pandemic alert of H1N1. Its first confirmed case in India reported on 16 th May, 2009, was a passenger who travelled from USA to Hyderabad. In 2015 it increased to over 10000 cases and 660 deaths in India.
As per the national guidelines, pharyngeal or nasopharyngeal swabs were collected from the suspected case-patients and their close contacts for detection of the virus using RT-PCR assay.
There were159 suspected cases of H1N1 out of which 73 (45.9%) were confirmed with 29 deaths, AR was found 2.735/lac population. Maximum number of cases 29 (39.7%) has been found in the age above 50 years. Higher percentage of cases was found in females, urban areas and all the cases were found in months of January to March.
The AR of H1N1 in this study is found 2.735/lac population with CFR 39.7%. A study conducted in 2014 in district Amritsar showed that during the years 2009 to 2014 it ranged between 0 to 0.763/lac population. It was also much higher than 1.9/lac population found in other studies. Some increase in CFR has been observed in present study. Higher percentage of cases in the age groups above 30 years; and higher percentage of urban contrary to previous study of year 2014 has been observed. Bimodal peaks of H1N1 had been found in year 2014 while in present study unimodal peak has been observed. Trend of the shift of the disease towards the winter months has been observed.
H1N1, pandemic, IDSP, attack rate, CFR and surveillance
