A Comparative Analysis of the Spanish Flu 1918 and COVID-19 Pandemics

Two devastating pandemics, the Spanish Flu and COVID-19, emerged globally in 1918 from America and 2019 from China, respectively. Influenza virus A H1N1, which caused Spanish Flu and SARS-CoV2, which caused COVID-19, belong to different virus family and bear different structure, genomic organization and pathogenicity. However, the trajectory of the current outbreak of COVID-19 depicts a similar picture of the Spanish Flu outbreak. Estimates suggest that ~500 million infected cases and ~50 million deaths occurred globally from 1918-1919 due to the H1N1 virus. While SARS-CoV2 accounted for ~2 million cases and 130,885 deaths just within three and a half months, and the number is still increasing. To contain the spread of COVID-19 and to prevent the situation which happened a century back, it becomes essential to examine and correlate these pandemics in terms of their origin, epidemiology and clinical scenario. The strategies tailored to control the Spanish Flu pandemic may help to contain the current pandemic within time.