Term:Negative
Related terms
RT-PCR test or other rapid diagnostic tests that test for the presence of COVID-19 can have a positive, negative or inconclusive result
Normative
Encyclopaedic information
Persons who are vaccinated or who have had a recent negative COVID-19 test result and persons who have recovered from COVID-19 in the previous six months seem to have a reduced risk of infecting people with SARS-CoV-2, according to current and still evolving scientific evidence.
Source: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32021R0953
Examples
Consequently, a single negative swab from the upper airway does not rule out SARS-CoV-2 infection and repeated sampling from multiple sites, including the lower airway, will increase diagnostic yield.
Source: https://www.sccm.org/getattachment/Disaster/SSC-COVID19-Critical-Care-Guidelines.pdf
Travelers may need evidence of a recent negative test result to enter some states or countries; such documentation may be an acceptable alternative to quarantine upon arrival.
Source: https://files.covid19treatmentguidelines.nih.gov/guidelines/covid19treatmentguidelines.pdf
Collocations
- negative (test) result
- negative PCR/RT-PCR
- indicating a negative result
- false negative
- negative pressure room
Keyness
>1000
Research
Definition/description
Paediatric patients were discharged after two negnegativeative SARS-CoV-2 PCRs.
Source: https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30236-X/fulltext
Examples
If the first RT-PCR result was negative, the second nasopharyngeal sample of observing patients would be collected on DAY 3 for RT-PCR test again.
Source: https://www.medrxiv.org/content/10.1101/2020.02.13.20022673v1
Twenty patients were finally laboratory confirmed with NCP, among whom 14 patients were positive for the first admission SARS-COV-2 RT-PCR, 3 patients turned to positive in the second test after the first result.
Source: https://www.medrxiv.org/content/10.1101/2020.02.13.20022673v1
Collocations
- false(ly) negative
- to test negative for
- PCR negative
- for testing to be negative
- negative patients
Keyness
>1000
Press
Examples
Self-isolation can be ended after five days at the earliest with a negative test.
Source: https://www.telegraph.co.uk/travel/news/covid-travel-restrictions-news-green-list-update-amber-red/
On the sixth day they must get tested again and if the result is negative, they can end isolation after day seven.
Collocations
- negative test
- negative result
- to test negative
Keyness
>1000
Comments
Examples
If they take a PCR test and receive a negative result then what is the problem here?
Collocations
- negative result
- negative test
- to test negative
Keyness
- negative: >1000
- negative test: 90
- negative result: 812