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NIH scientists hunt for hidden COVID in spit and sneezes

NCT ID NCT04348240

Knowledge-focused Sponsor: National Institute of Dental and Craniofacial Research (NIDCR) Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether the COVID-19 virus can be found in the saliva of people who have no symptoms or only mild symptoms. Researchers collected samples from the nose, mouth, eyes, and blood, and also tested how many virus particles are released during speaking with and without a mask. The goal was to better understand how the virus spreads and whether masks help prevent it.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

55 people

The number who actually took part.

Started

Apr 2020

Finished

Jan 2022

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

1\) asymptomatic high-risk subjects with known history of close personal contact with a COVID-19 positive person not tested (SARS-CoV2 status unknown)2) asymptomatic or mildly symptomatic (fever withoutcough, sneezing or shortness of breath) subjects who are COVID-19 positive 3) COVID-19 positive individuals retesting negative can be enrolled to complete the electronic questionnaire(s) assessment and allow evaluation of history of symptoms. 4) COVID-19 positive individuals enrolled and admitted to the NIH Clinical Center for other protocols.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITERIA: In order to be eligible to participate in this study, an individual must meet all the following criteria: 1. Willing and able to sign and date the informed consent form 2. Willing to comply with all study procedures and available for study visits and calls 3. Male or female, aged \>= 18 years of age 4. Persons who test COVID-19 positive in past 48 hours (verbal confirmation followed by documented test results, sent electronically) and are asymptomatic or have mild symptoms (e.g., fever, mild malaise, sore throat or sneezing) individuals who have re-tested and are negative may be enrolled to understand progression and resolution of disease; persons hospitalized at the NIH Clinical Center meeting Inclusion Criteria 1-3 may be enrolled on this study 5. Persons considered high risk for COVID-19 due to personal contact within the past 7 days with a COVID-19 positive individual (e.g., co-habitating family member of COVID-19 positive) and has no symptoms or mild symptoms of COVID-19 - verbal confirmation followed by documented test results of positive individual, sent electronically EXCLUSION CRITERION: An individual who meets any of the following criteria will be excluded from participation in this study: 1\. COVID-19 positive subjects with active moderate or severe symptoms of cough or shortness of breath (upper and lower respiratory symptoms) or currently requiring hospitalization at a hospital other than NIH Clinical Center (recovering COVID-19 positive patients can be enrolled).

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Conditions

The condition(s) this trial relates to.

Coronavinae infectious disease COVID-19

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COVID-19

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    Bethesda, Maryland, 20892, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.