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.
35% of people with fever had eye temperature below 37.2C.
Identified only 31 people with fever
Correct indentification of the 48 people infected