Marco Polo was the original, trailblazing ’tourist’. Born around 1254 into a wealthy Venetian merchant family, at the age of 17 he embarked on an epic journey to Asia and was one of the first weste...
West Nile virus is a neurotropic flavivirus that has emerged globally as a primary cause of viral encephalitis. Infection of humans and other vertebrate animals is associated with a febrile illness...