Oropharyngeal secretions may help cut false negative Covid-19 test results: Study
(World News Science)

BEIJING: Testing of secretions from the mouth and pharynx of a person may reduce the number of false negative results from nasal swab tests of patients who have seemingly recovered from the disease, according to a study. In the study, published in the Journal of Dental Research, a small number of patients that had tested negative through nasopharyngeal swabs (NPS) were found...