Human coronaviruses typically result in acute symptomology of the respiratory system. They are transmitted predominantly via aerosols. Influenza viruses circulate in humans and cause seasonal epidemics. Being a droplet infection, influenza is transmitted from human to human through exposure to the virus-containing respiratory secretions-large droplets produced during coughing and sneezing. Moreover, close contact with the influenza patient and contact with contaminated surfaces remains the other potential sources of disease acquisition.