| | Conditions & Treatments | Cold & Flu Was there a flu outbreak after World War 1? Yes, the Spanish Flu pandemic occurred after World War 1 between 1918 and 1920 and is estimated to have claimed the lives of 50 million people during those years. Cold & Flu - Related Articles Can you get a cold after the flu shot? Uses for Dextromethorphan Common Cold Symptoms How to Cure a Cough What symptoms would indicate that a person has the flu rather than cold? How to Identify of Bronchitis Over-the-Counter Flu Prevention