Article ; Online: SARS-CoV-2 RT-PCR profile in 298 Indian COVID-19 patients: a retrospective observational study.
Pathogens and disease
2020 Volume 79, Issue 1
Abstract: Background: despite being in the 5th month of pandemic, knowledge with respect to viral dynamics, infectivity and RT-PCR positivity continues to evolve.: Aim: to analyse the SARS CoV-2 nucleic acid RT-PCR profiles in COVID-19 patients.: Design: it ...
Abstract | Background: despite being in the 5th month of pandemic, knowledge with respect to viral dynamics, infectivity and RT-PCR positivity continues to evolve. Aim: to analyse the SARS CoV-2 nucleic acid RT-PCR profiles in COVID-19 patients. Design: it was a retrospective, observational study conducted at COVID facilities under AIIMS, New Delhi. Methods: patients admitted with laboratory confirmed COVID-19 were eligible for enrolment. Patients with incomplete details, or only single PCR tests were excluded. Data regarding demographic details, comorbidities, treatment received and results of SARS-CoV-2 RT-PCR performed on nasopharyngeal and oropharyngeal swabs, collected at different time points, was retrieved from the hospital records. Results: a total of 298 patients were included, majority were males (75·8%) with mean age of 39·07 years (0·6-88 years). The mean duration from symptom onset to first positive RT-PCR was 4·7 days (SD 3·67), while that of symptom onset to last positive test was 17·83 days (SD 6·22). Proportions of positive RT-PCR tests were 100%, 49%, 24%, 8·7% and 20·6% in the 1st, 2nd, 3rd, 4th and >4 weeks of illness. A total of 12 symptomatic patients had prolonged positive test results even after 3 weeks of symptom onset. Age > = 60 years was associated with prolonged RT-PCR positivity (statistically significant). Conclusion: this study showed that the average period of PCR positivity is more than 2 weeks in COVID-19 patients; elderly patients have prolonged duration of RT-PCR positivity and requires further follow up. |
---|---|
MeSH term(s) | Adolescent ; Adult ; Aged ; Aged, 80 and over ; Asymptomatic Diseases ; COVID-19/diagnosis ; COVID-19/epidemiology ; COVID-19/pathology ; COVID-19/virology ; COVID-19 Nucleic Acid Testing/methods ; Child ; Child, Preschool ; Comorbidity ; Diabetes Mellitus/diagnosis ; Diabetes Mellitus/epidemiology ; Diabetes Mellitus/pathology ; Diabetes Mellitus/virology ; Humans ; Hypertension/diagnosis ; Hypertension/epidemiology ; Hypertension/pathology ; Hypertension/virology ; India/epidemiology ; Infant ; Infectious Disease Incubation Period ; Male ; Middle Aged ; Nasopharynx/virology ; Oropharynx/virology ; RNA, Viral/genetics ; Retrospective Studies ; Reverse Transcriptase Polymerase Chain Reaction ; SARS-CoV-2/genetics ; SARS-CoV-2/pathogenicity ; Severity of Illness Index |
Chemical Substances | RNA, Viral |
Keywords | covid19 |
Language | English |
Publishing date | 2020-10-14 |
Publishing country | United States |
Document type | Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't |
ISSN | 2049-632X |
ISSN (online) | 2049-632X |
DOI | 10.1093/femspd/ftaa064 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.