ArticlePNAS nexus2023
Extreme differences in SARS-CoV-2 viral loads among respiratory specimen types during presumed pre-infectious and infectious periods.
Article in PNAS nexus, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed.
- Diagnostic performance of upper airway sampling sites for SARS-CoV-2 and influenza testing.Microbiology spectrum · 2026Trial
- Validation of Dried Saliva for Molecular Diagnostics.ACS measurement science au · 2026Article
- A One-Pot RT-LAMP Diagnostic Assay for SARS-CoV‑2 from Saliva Samples.ACS measurement science au · 2025Article
- Saliva Has High Sensitivity and Specificity for Detecting SARS-CoV-2 Compared to Nasal Swabs but Exhibits Different Viral Dynamics from Days of Symptom Onset.Diagnostics (Basel, Switzerland) · 2025Article
- Colorimetric RT-LAMP for SARS-CoV-2 detection from nasopharyngeal swabs or crude saliva: a multicountry diagnostic accuracy study in Africa.The Lancet. Global health · 2025Article
- COVID-19 study quantifying daily viral loads confirms throat samples are key to early diagnosis.Diagnostic microbiology and infectious disease · 2025Article
- Efficient and accurate detection of viral sequences at single-cell resolution reveals putative novel viruses perturbing host gene expression.bioRxiv : the preprint server for biology · 2025Article
- The ratio between SARS-CoV-2 RNA viral load and culturable viral titre differs depending on the stage of infection: a case study of household transmission in an adult male.Access microbiology · 2025Article
- Validating Combination Throat-Nasal Swab Specimens for COVID-19 Tests Would Improve Early Detection, Especially for the Most Vulnerable.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024Article
- Molecular Detection of SARS-CoV-2 From Throat Swabs Performed With or Without Specimen Collection From the Tonsils: Protocol for a Multicenter Randomized Controlled Trial.JMIR research protocols · 2024Article
- Heterogeneous SARS-CoV-2 kinetics due to variable timing and intensity of immune responses.JCI insight · 2024Article
- Heterogeneous SARS-CoV-2 kinetics due to variable timing and intensity of immune responses.medRxiv : the preprint server for health sciences · 2024Article
- Personal characteristics and transmission dynamics associated with SARS-CoV-2 semi-quantitative PCR test results: an observational study from Belgium, 2021-2022.Frontiers in public health · 2024Observational
- Daily SARS-CoV-2 Nasal Antigen Tests Miss Infected and Presumably Infectious People Due to Viral Load Differences among Specimen Types.Microbiology spectrum · 2023Article
- Maternal plasma and salivary anelloviruses in pregnancy and preterm birth.Frontiers in medicine · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
16 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
SARS-CoV-2 viral-load measurements from a single-specimen type are used to establish diagnostic strategies, interpret clinical-trial results for vaccines and therapeutics, model viral transmission, and understand virus-host interactions. However, measurements from a single-specimen type are implicitly assumed to be representative of other specimen types. We quantified viral-load timecourses from individuals who began daily self-sampling of saliva, anterior-nares (nasal), and oropharyngeal (throat) swabs before or at the incidence of infection with the Omicron variant. Viral loads in different specimen types from the same person at the same timepoint exhibited extreme differences, up to 10
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.