@ehBeth,
Bill Gates (described as a genius by a report I watched
) said the greatest danger we face today is a pandemic like the Spanish Flu of 1918 . I think he is right . It is easy to lose track of recent outbreaks . SARS-CoV, MERS, Ebola, Enterovirus D68 (EV-D68), Cholera (Haiti), New H1N1 'swine' influenza, New avian H5N1 ...did I miss any ?
Haiti lost 7,000 people to a preventable disease like Cholera, and it continues still, so the Third World Population is at greatest risk .