4 ms·there were zero pandemics for 100 years between 1920s and 2020sby flavius29663 4y agothere were zero pandemics for 100 years between 1920s and 2020skenneth 4y agoThat's complete BS. Swine flu was a full blown pandemic barely a decade a ago and HIV is still ongoing one.mdp2021 4y ago> pandemics... between 1920s and 2020s 1956-58, 1968, 1981- ...