What Caused The 1918 Flu
During the 1890 influenza epidemic Pfeiffer found what he determined to be the microbial agent to cause influenza. The 1918 influenza pandemic was the most severe pandemic in recent history. Influenza Pandemic Of 1918 19 Cause Origin Spread Britannica A flu pandemic such as the one in 1918 occurs when an especially virulent new influenza strain for which theres little or no immunity appears and spreads quickly from person to. What caused the 1918 flu . Autopsies after the war proved that the 1918 flu was NOT a FLU at all. Although there is not universal consensus regarding where the virus originated it spread worldwide during 1918-1919. It was caused by an H1N1 virus with genes of avian origin. More people died of influenza in a single year than in four-years of the Black Death Bubonic Plague from 1347 to 1351. COVID-19 is caused by a novel coronavirus not influenza so scientists are still learning how it behaves. It was caused by an H1N1 virus with genes of avian origin.