LAUSR

We reported the recent introduction of hepatitis C virus genotype 4 infection, a new subtype in Mexico, with a transcontinental origin sustained by sexual transmission in human immunodeficiency virus–infected patients. Abstract The recent detection of hepatitis C virus genotype 4 infection in human immunodeficiency virus–infected patients prompted performing molecular characterization of these isolates. All the Mexican isolates belonged to a subcluster within the 4d group and shared a common ancestor with a French isolate. The estimated timing of introduction in Mexico City was as recent as December 2015.