TEMPO.CO, Yogyakarta – The accuracy of the Covid-19 detection tool found by Gadjah Mada University (UGM) Yogyakarta, GeNose, has recently been highlighted again after the spike in cases increased sharply.
One of the highlights came from the Indonesian Consumers Foundation (YLKI) who requested that the use of GeNose as a condition of travel such as trains be removed because the device was alleged to have low accuracy and gave rise to a ‘false negative’ status.
Virus researcher who is also a spokesman for GeNose UGM, Mohamad Saifudin Hakim said that the breath-based Covid-19 detection device had been functioning to prevent the transmission of Covid-19.
“This is because GeNose produces an estimated number of Covid-19 (positive average/positivity rate) from a number of samples of prospective passengers, who usually do not show symptoms of Covid-19, as much as nine percent,” said Hakim, Sunday, June 27, 2021.
The expert on bacteriology, virology and mycology at the UGM Faculty of Medicine, Public Health and Nursing (FKKMK) said that currently the national average positive rate is 14 percent of the number of people tested.
Some people who are detected positive are in the category of asymptomatic people (OTG). This number has the potential to be included in the population of prospective public transportation passengers.
“The implementation of GeNose as a screening tool for prospective public transportation passengers, especially trains, also shows a fairly high positive rate,” said the doctor who graduated from Erasmus University Rotterdam, The Netherlands. The average positivity rate with the GeNose C19 is nine percent with a standard deviation of three percent.
Some prospective passengers who feel healthy and want to travel, but are actually OTG, can be caught and detected by GeNose units at Gambir Station between 30 May-15 June 2021.
This, he said, reflects that the GeNose C19 is still accurate in capturing passengers who are suspected of being positive even with OTG status. “Instead of being a false negative, GeNose C19 actually prevents transmission if the positive result is adhered to,” said Hakim, who is now a lecturer and virus researcher at UGM.
Meanwhile, the national Covid-19 positivity rate is based on examination of symptomatic and asymptomatic people, and not only in the corridors of the transportation system. So, according to him, it makes sense if the GeNose C19 positive rate is slightly different from the national percentage.
“The similarity is that currently the positivity rate of GeNose C19 and the Covid 19 Task Force has exceeded the WHO positivity rate, which is above five percent,” said Hakim.
With the accuracy of detecting potential travellers who are likely to be OTG, the GeNose C19 actually prevents transmission, which is characterized by a positive rate that is close to the national positive level and the lack of false negative data.
“Of course, we also remind the community to accept if they obtain a positive test result and comply by not continuing the journey for the sake of mutual safety,” said the Judge.
“The GeNose development team also continues to improve the quality and performance of the tool so that its accuracy continues to increase and is increasingly trusted in serving the needs of the community,” said Hakim.
Screening tests that are fast, easy, accurate and affordable are needed by the lower classes who are forced to travel. Because, the need for work and economic needs during the pandemic is getting more difficult.
Currently, the GeNose C19 distribution permit, namely AKD 20401022883, is still valid and the GeNose C19 is undergoing external validation tests. This test phase is a post-marketing producer’s commitment and producer compliance with applicable regulations in Indonesia.
“Understanding the external validation test does not mean that the GeNose C19 is unfit for use or that its reliability is doubtful. In fact, additional data from external validation will enrich the GeNose C19 research data which can increase the intelligence and accuracy of the GeNose C19,” he said.
Handling Covid-19, 17 Thousand Cubic Meters of Additional Liquid Oxygen Supplied to Yogya