Friday, January 30, 2015


A new test is invented which will now detect dengue with the help of saliva. This will now make testing more convenient as there will be no need to go to lab. Dengue is seen to spread rapidly. In India many people have lost their life due to the same. It is seen that this disease is most prevalent from March till October. This is most severe in rainy season.

Aedes aegypti in Dar es Salaam, Tanzania
Image Credit: 
Muhammad Mahdi Karim

The test to detect dengue is a very time consuming process, hence, it affects the beginning of treatment. However, detection of dengue is a less complicated process. Researchers have invented a new disposable device which is paper based that will allow dengue specified antibodies from saliva to be detected within 20minutes. 

This device is developed by IBN (Institute of Bioengineering and Nanotechnology) in Singapore who is now looking to commercialize the same. IBN Executive Director Professor Jackie Y Ying quoted “Our rapid diagnostic kit can detect a key dengue antibody from saliva that is present in early-stage secondary infection. He also said “The ability to differentiate between primary and secondary dengue infections makes it a valuable early diagnosis tool that would help to ensure timely treatment and proper care of patients”.

This new technology has made the detection less difficult and complicated. Vaccinations for dengue have still not been detected and still a threat for human life. As the incubation period before the development of symptoms is seen between 4-10 days after the infection occurs, hence, this new technology will help early diagnosis.

There will be no need to send the samples to laboratories. The patient blood sample is taken and infection is diagnosed in the lab and presence of dengue antigens or antibodies is seen. But, now this new device will be able to detect IgG, with contact from saliva in a single step. Saliva can be easily collected. But unlike other fluids, one will not be able to apply directly to commercially available kits, as this will cause sensor nanoparticles to stick randomly to the strip.

So, what do you think about this new invention?


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