Open Access
Open access
volume 25 issue 32

Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020

Anika Singanayagam 1, 2
Monika Patel 1, 2
Andre Charlett 3
Jamie Lopez Bernal 4
Vanessa Saliba 4
Joanna Ellis 2
Shamez Ladhani 4
Maria Zambon 2
Robin Gopal 2
1
 
These authors contributed equally
2
 
Virus Reference Department, Public Health England, Colindale, United Kingdom
3
 
Data and Analytical Services, Public Health England, Colindale, United Kingdom
4
 
Immunisation and Countermeasures, Public Health England, Colindale, United Kingdom
Publication typeJournal Article
Publication date2020-08-13
scimago Q1
wos Q1
SJR2.331
CiteScore15.5
Impact factor7.8
ISSN15607917, 1025496X
Public Health, Environmental and Occupational Health
Epidemiology
Virology
Abstract

Severe acute respiratory syndrome coronavirus 2 viral load in the upper respiratory tract peaks around symptom onset and infectious virus persists for 10 days in mild-to-moderate coronavirus disease (n = 324 samples analysed). RT-PCR cycle threshold (Ct) values correlate strongly with cultivable virus. Probability of culturing virus declines to 8% in samples with Ct > 35 and to 6% 10 days after onset; it is similar in asymptomatic and symptomatic persons. Asymptomatic persons represent a source of transmissible virus.

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GOST Copy
Singanayagam A. et al. Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020 // Eurosurveillance. 2020. Vol. 25. No. 32.
GOST all authors (up to 50) Copy
Singanayagam A., Patel M., Charlett A., Lopez Bernal J., Saliba V., Ellis J., Ladhani S., Zambon M., Gopal R. Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020 // Eurosurveillance. 2020. Vol. 25. No. 32.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.2807/1560-7917.ES.2020.25.32.2001483
UR - https://doi.org/10.2807/1560-7917.ES.2020.25.32.2001483
TI - Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020
T2 - Eurosurveillance
AU - Singanayagam, Anika
AU - Patel, Monika
AU - Charlett, Andre
AU - Lopez Bernal, Jamie
AU - Saliba, Vanessa
AU - Ellis, Joanna
AU - Ladhani, Shamez
AU - Zambon, Maria
AU - Gopal, Robin
PY - 2020
DA - 2020/08/13
PB - European Centre for Disease Control and Prevention (ECDC)
IS - 32
VL - 25
PMID - 32794447
SN - 1560-7917
SN - 1025-496X
ER -
BibTex
Cite this
BibTex (up to 50 authors) Copy
@article{2020_Singanayagam,
author = {Anika Singanayagam and Monika Patel and Andre Charlett and Jamie Lopez Bernal and Vanessa Saliba and Joanna Ellis and Shamez Ladhani and Maria Zambon and Robin Gopal},
title = {Duration of infectiousness and correlation with RT-PCR cycle threshold values in cases of COVID-19, England, January to May 2020},
journal = {Eurosurveillance},
year = {2020},
volume = {25},
publisher = {European Centre for Disease Control and Prevention (ECDC)},
month = {aug},
url = {https://doi.org/10.2807/1560-7917.ES.2020.25.32.2001483},
number = {32},
doi = {10.2807/1560-7917.ES.2020.25.32.2001483}
}