There's a recent study(0) that suggests that saliva tests are more reliable than nasal swabs for detection of Omicron variants, whereas the inverse was true for

There's a recent study(0) that suggests that saliva tests are more reliable than nasal swabs for detection of Omicron variants, whereas the inverse was true for the Delta variant. (0) https://www.medrxiv.org/content/10.1101/2021.12.22.21268246v1.full https://www.medrxiv.org/content/10.1101/2021.12.22.21268246v...