By The Nation
Dr Opas Kankawinpong, director-general of the department, said that according to the saliva test results of 6,380 people, including foreign workers, retailers, public transport drivers, and medical personnel, only one person was shown positive.
"This shows that Thailand has a low epidemic rate as most Covid-19 patients are people who returned from other countries," he said.
"In Bangkok alone, 4,856 people from the target of 15,000 people have already taken the saliva test and all were negative."
He added that the best time to take the saliva test for Covid-19 was in the morning after waking up.
"People who would like to take this test should not brush their teeth, use mouthwash, eat, drink, or chew gum for at least one hour before the saliva is collected, otherwise it may lead to an inaccurate result," he added.
"However, we will not conduct the test on a patient under investigation and people at risk of Covid-19 infection."