Is DEN-1 the only type of dengue virus? The Dengue Serotypes Dengue infections are caused by four closely related viruses named DEN-1, DEN-2, DEN-3, and DEN-4. These four viruses are called ...
The year of isolation (four-digit year for viruses isolated ... and 9 possible neuraminidase subtypes]. Thus, a type A virus isolated in 1995 in Memphis Tennessee with a strain number of 123 ...