Burden of H1N1 Influenza Related Mortality in a Tertiary Care Centre

Supriya Prathibha Shankaranarayana Bhat, Mahalingeshwara Kelagina Pidamale Bhat, Ruhi Kumar, Giridhar Belur Hosmane, Ivor D'Sa
2020 Journal of Evolution of Medical and Dental Sciences  
BACKGROUND Influenza or the common flu is a commonly recognized cause of respiratory tract infection. A high level of clinical suspicion is required before a sample can be sent and often the diagnosis is established posthumously. In developing countries like India, data on disease burden of Influenza is severely lacking. It is a consequence of an under-estimation of Influenza as an important cause of illness and its natural course under-simplified to be a mild self-limiting illness. India was
more » ... fected with a moderate severity compared to the other countries, although there was an insufficiency of epidemiological data from India during 2009 -2010. Post-pandemic period, India was affected by major outbreaks in 2015 and 2017. We wanted to analyse the rate of positivity in a tertiary care centre amongst the total number of oropharyngeal swabs sent for Influenza virus testing. We also wanted to assess the mortality rate in Influenza positive cases in a tertiary care centre. RESULTS Out of 127 oropharyngeal swabs that were sent during the study time period, 24 (18.9 %) were positive for influenza virus. 18 (75 %) cases were found to be H1N1 positive, 3 were H3N2 positive (seasonal strain) and remaining 3 were positive for Influenza B virus. 9 (37.5 %) out of 24 cases of influenza succumbed to the disease, of which all were H1N1 positive (50 % of the total H1N1 cases). CONCLUSIONS H1N1 related mortality is a cause for concern for every healthcare providing institution. Influenza virus should be actively tested in patients with respiratory symptoms. During this COVID 19 related pandemic situation, there is a higher possibility of underdiagnosing H1N1. Lessons learnt from the past should be remembered and Influenza should not be neglected.
doi:10.14260/jemds/2020/858 fatcat:j3incpf5uvcxvg7ze7lwrwr3kq