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SARS-CoV-2 Detection in Fecal Samples in Sym-asymptotic Patients with Typical Findings of COVID-19 on Ag-RDT and SARS-CoV-2 RT-PCR Tests

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Publication Date
2022-09-28
Author
Magwanga, Richard Odongo
Onyango, Benson
Ochieng, Alfred
Awandu, Shehu Shagare
Were, Pamella
Kirungu, Joy Nyangasi
Oloo, Marceline Adhiambo
Muok, Erick
Munga, Stephen
Ogutu, Fredrick
Orwa, Angeline
Okumu, Fredrick
Onyango, Clayton
Awuor, Dorothy
Omoto, Francis Orata
Ochieng’-Midega, Justine
Oure, Bonface
Nyunja, Regina
Ade, Fredrick
Indechi, Shirley
Okuto, Erick
Estambale, Benson
Type
Article
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Citation

Magwanga, R.O.; Onyango, B.; Ochieng, A.; Awandu, S.S.; Were, P.; Kirungu, J.N.; Oloo, M.A.; Muok, E.; Munga, S.; Ogutu, F.; Orwa, A.; Okumu, F.; Onyango, C.; Awuor, D.; Orata, F.; Ochieng’-Midega, J.; Oure, B.; Nyunja, R.; Ade, F.; Indechi, S.; Okuto, E.; Estambale, B. SARS-CoV-2 Detection in Fecal Samples in Sym-asymptotic Patients with Typical Findings of COVID-19 on Ag-RDT and SARS-CoV-2 RT-PCR Tests. Preprints 2022, 2022090439 (doi: 10.20944/preprints202209.0439.v1).

Abstract/Overview

Coronavirus is a disease caused by a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) which emerged as a global pandemic in 2019 from Wuhan, China. Since its emergence, it has caused immense suffering to human life, 6.27 million lives have been lost, movement curtailed and social dynamics disrupted. The golden standard for getting samples for SARS-CoV-2 detection is through oral- nasopharyngeal swab, this method of sample collection is invasive and uncomfortable, thus stigmatized the general population, and thereby impeded the progress of controlling the spread through mass testing. Being a contact disease, mechanisms to encourage mass testing is key to reduce the spread. This study thus developed a complimentary sample type to test for SARS-CoV-2, the use of human feces. Fecal samples were collected from 100 asym-symptomatic individuals suspected to be infected with COVID-19, virus RNA was then extracted and profiled through Real Time Polymerase Chain Reaction (RT-qPCR). The antigen rapid diagnostic test revealed high positivity rate of 44%, but the real time polymerase chain reaction results on nasopharyngeal and fecal samples revealed a significant variation, high number of the patients tested positive with stool samples compared to the nasopharyngeal swabs, with 43 and 37%, respectively. SARS-CoV-2 virus was detected in both symptomatic and asymptomatic individuals; however, the symptomatic registered a higher positivity of 25% compared to 20% among the asymptomatic patients. Vaccination only lowered the risk of infection, fully and partially vaccinated lowered the infection level to 10% compared to 20% among the unvaccinated. Finally, gender parity in relation to COVID19 was evaluated, more females (56%) compared to males were recruited in this study, out of which (20; 43.4%) were positive, and 26 (56.6%) were negative based on fecal RT-qPCR outcomes. Based on the outcome of this study, rapid diagnostic test (Ag-RDT) however cheap and or fast does not provide accurate information, moreover, the virus does not stay longer within the Oronasopharyngeal region, thus the invalid or negative results, thus use of feces should be adopted as a confirmatory test to ascertain the COVID19 status of an individual.

Subject/Keywords
COVID19; SARS-Cov-2 Virus; Oro-Nasopharyngeal; Fecal; Vaccination; Asym-Symptomatic; Rapid Diagnostic Test
Publisher
Preprints
Permalink
http://ir.jooust.ac.ke:8080/xmlui/handle/123456789/11607
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