Scientist and doctors believe coronavirus is more contagious than 1918 Spanish flu as its RO factor is much higher than Spanish flu. RO factor is the productive value describing the average number of people an infected individual can expect to pass onto. It is a measure of how transmissible, or contagious, a disease is. It is estimated that due to Spanish Flu 500 million people died. It had RO Value of 1.42-2.28. Coronavirus has RO value of 5.57
