||World travel is increasing annually, also refugees and forced
migrations are increasing due to regional wars, economic downturn or opportunities
(1) At the turn of the 19th century an epidemic of TB on the Eastern
Seaboard of the USA was due to waves of European immigration into cheap slum housing. So
great was the demand for passages to the US that a whole fleet of fast steamships were
built. The most famous of these was The Titanic. Had the Titanic not sank, many of her
steerage passengers would have reached New York, and a new life, only to die of TB.