Portable DNA sequencer could speed up diagnosis of dengue fever
Researchers at the University of Tokyo have developed a portable DNA sequencer to help hospitals in developing countries diagnose dengue fever more quickly and trace its path of infection. After separating serum from blood samples, the researchers converted it to DNA fragments which are amplified for sequencing. A computer linked to the device then cross-references the DNA with a database of genetic information to determine which virus type the patient is infected with. Currently, diagnosis of dengue fever relies on advanced genetic sequencers or a polymerase chain reaction, which are too costly for healthcare budgets in the developing world.

TOKYO -- A team led by a professor from the University of Tokyo has devised a fast and cost-effective method of determining dengue fever virus types using a portable DNA sequencer.

Use of the palm-sized device will hopefully be able to speed up diagnosis at hospitals in developing countries and also help trace the path of infection.