Researchers from UTMB have identified a fifth dengue fever subtype — the first new dengue subtype in 50 years of a new type of dengue virus — discovered by chance during screening of samples from collected from a 2007 outbreak of dengue in Malaysia’s northern Sarawak state. According to lead author Nikos Vasilakis at the Third International Conference on Dengue and Dengue Haemorrhagic Fever in Bangkok, when the UTMB researchers sequenced the virus, they found that found that it is indeed phylogenetically distinct from the other four types, and further experiments determined that monkey antibodies produced against the new type differ significantly from ones resulting from the four previously known dengue viruses. The news also appears in the Center for Infectious Disease Research and Policy and BioNews Texas.