It is not necessary to make an “ah” sound when performing the nucleic acid test to avoid viral contamination due to vocalization.
There is no need to make any sound when performing a nucleic acid test. The person being tested only needs to open his or her mouth and shout “ah” to make it easier for the healthcare worker to take the sample. On the other hand, if a person who is already infected with the new coronavirus yells out during the nucleic acid test, it is very easy for the virus to spread through aerosols.
Also, since masks need to be removed during the test, if aerosol transmission occurs, it is very easy for the person being tested to become infected with the new coronavirus.
It is recommended that the nucleic acid, do not make a sound, health care workers sampling is completed, should immediately wear a good mask and quickly leave, do not continue to stay.