While saliva has shown promise for SARS-CoV-2 detection, very few studies have directly compared it to the current gold standard, nasopharyngeal (NP) swab. So, we compared NP and saliva samples from COVID-19 patients and self-collected samples from asymptomatic healthcare workers pic.twitter.com/WQDAO0b79Y

— Anne Wyllie (@awyllie13) April 22, 2020