says a pandemic occurs exactly every 100 years
says a pandemic occurs exactly every 100 years
1720 great plague of marseille,


































1820 cholera,


































1920 spanish flu,


































2020 covid19.





































































it looks like in recent centuries, once every 100 years, the world is devastated by a pandemic.





































































have we learnt anything?


































later today i will try to write on one of them for us to learn something vital.