“…Other simultaneous Flavivirus infections, especially those caused by different dengue virus types, such as DENV-1 and 2 22,36 , DENV-2 and 3 3,22,43,47,48 , DENV-1 and 3 26 , DENV-3 and DENV-4 14,15 have been reported. Hence, co-infection with distinct DENV serotypes during outbreaks may be expected.…”