Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Comparison of number of positive patients detected in NPS and saliva samples based on the days of symptom onset and asymptomatic cases. (B) Percentage of positivity of SARS-CoV-2 detection from saliva samples at 1 to 5 days, 6 to 10 days, and >10 days of onset of symptoms and asymptomatic cases.
