INFLUENZA PANDEMIC – 1918 SPANISH FLU

BY INFLUENZA VIRUS VARIANT H1N1 3 WAVES – OVER 2 YEARS – 1918-19 ACROSS COUNTRIES, SPAIN 1ST REPORTED IT 1ST CASE IDENTIFIED IN US – MARCH 1918 OVER 50 CRORE PATIENTS (500 MILLION+) THAT IS, 1/3RD OF THE WORLD’S POPULATION…