Viral Sign is superior to the best thermography result published by Singapore-based researchers during the SARS-2003 outbreak.
False negatives: The great challenge of this pandemic.
Less than 30% of people have a temperature higher than 37.8ºC in the first 5 days after becoming infected with COVID-19. As a result, there is great risk for a large number of false negatives.
Symptomatic screening with a single point body temperature permits individuals who are “false negatives”, infected but without fever, to enter factories, healthcare facilities, schools, government buildings, and other centers where people gather.
The virus thrives on false negatives.
How does Viral Sign differ from point (thermometer) and mass temperature (thermal camera) assessment?
Both point thermometers and thermal cameras are based on a single maximum temperature point.
- Great variability in readings and lower accuracy,
- Exposes the operator to risk of infection from the individuals the operator encounters for screening,
- Exposes those being screened to a person (the operator) who may be infected.
Thermal cameras cannot identify the presence of virus prior to the onset of fever.
The maximum temperature of the body surface is not always the most effective way to know if the person is infected by the new coronavirus (COVID19).
Number of people infected with eye temperature below 37.2 C (no fever).
Body temperature measurement of 313 people.
35% of people with fever had eye temperature below 37.2C.
Identified only 31 people with fever
Correct indentification of the 48 people infected