It is 75 years since the last outbreak of smallpox in the USA,and nearly 40 years since the world was declared small pox free’but in the 21st century with autonomous vehicles looming,virtual voice assistants on hand to help,and mobile technology that's able to summon everything from a donut to a date with a simple swipe,it is easy to imagine that these basic biological threats are a thing of the past.However,although it seems that we have succeeded in winning the battle against smallpox,there are many more diseases which continue to be a threat.Coronavirus and the spreading threat of Covid-19 is of course the most pressing current example.
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