scholarly journals Possible Early Vertical Transmission of COVID-19 from an Infected Pregnant Female to Her Neonate: A Case Report

2020 ◽  
Author(s):  
Tapas Bandyopadhyay ◽  
Abhinav Sharma ◽  
Pratima Kumari ◽  
Arti Maria ◽  
Rahul Choudhary
Keyword(s):  
Public Health ◽  
Vertical Transmission ◽  
Antibody Test ◽  
Public Health Emergency ◽  
Pregnant Female ◽  
Rare Entity ◽  
Rt Pcr ◽  
Igg Antibody ◽  
Mode Of Transmission ◽  
Reported Data

Abstract Severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-19) has emerged as a public health emergency in recent times. The reported data on the mode of transmission of coronavirus disease 2019 (COVID-19) are largely through contact, droplet, airborne and fomite transmission methods with vertical transmission being a rare entity. We hereby report a case of a probable vertical transmission of SARS-CoV-19 from an infected pregnant female to her neonate. The transmission has been confirmed by a positive RT-PCR at 16 h of life along with a positive IgG antibody test for SARS-CoV-19 in the baby and after excluding the possible environmental contamination of the sample. The baby was asymptomatic during the course of hospital stay and was discharged from the facility on Day 9 of life.

scholarly journals A REVIEW ARTICLE ON: CORONA VIRUS A RAISING GAINT

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Suraj G Malpani ◽  
Shraddha T Nemane ◽  
Vishweshwar M Dharashive ◽  
Nilesh N Shinde ◽  
Sushil S Kore
Keyword(s):  
Public Health ◽  
Early Stage ◽  
Antiviral Treatment ◽  
Genome Structure ◽  
Respiratory Illness ◽  
Review Article ◽  
Public Health Emergency ◽  
Contact Tracing ◽  
Infected People ◽  
Mode Of Transmission

The 2019-nCoV has been identified as the reason of an outbreak of respiratory illness in Wuhan, Hubei Province, China beginning in December 2019. This outbreak had spread to 19 countries with 11,791 confirmed cases, including 213 deaths, as of January 31, 2020. The WHO declared it as a Public Health Emergency of International Concern. This study analyzed and discussed 70 research articles published until January 31, 2020 for a better understanding of the virology, pathogenesis, mode of transmission, classification, genome structure of this virus. Studies thus far have shown origination in link to a seafood market in Wuhan, but specific animal association has not been confirmed. The reported symptoms include fever, cough, fatigue, pneumonia, headache, diarrhea, hemoptysis, and dyspnea. Preventive measures like masks, hand hygiene practices, avoidance of public contact, case detection, contact tracing, and quarantines are being suggested for reducing the transmission. To date, no specific antiviral treatment is proven effective; hence, infected people primarily rely on symptomatic treatment and supportive care. Although these studies had relevance to control a public emergency, more research need to be conducted to provide valid and reliable ways to manage this kind of public health emergency in both short- and long- term. Coronaviruses (CoV) belong to the genus Coronavirus with its high mutation rate in the Corona viridae. The objective of this review article was to have a primary   opinion about the disease mode of transmission, virology in this early stage of COVID-19 outbreak. Keywords: 2019-nCoV, virology, pathogenesis, genome structure

scholarly journals Corticosteroid injections during the COVID-19 pandemic

2020 ◽  
Vol 1 (9) ◽  
pp. 605-611 ◽  
Author(s):  
David McKean ◽  
Siok Li Chung ◽  
Rory Fairhead ◽  
Oliver Bannister ◽  
Malgorzata Magliano ◽  
...  
Keyword(s):  
Observational Study ◽  
Clinical Outcomes ◽  
Antibody Test ◽  
British Society ◽  
Rt Pcr ◽  
Antibody Testing ◽  
Igg Antibody ◽  
Thoracic Imaging ◽  
Polymerase Chain ◽  
Corticosteroid Injections

Aims To describe the incidence of adverse clinical outcomes related to COVID-19 infection following corticosteroid injections (CSI) during the COVID-19 pandemic. To describe the incidence of positive SARS-CoV-2 reverse transcriptase polymerase chain reaction (RT-PCR) testing, positive SARS-COV2 IgG antibody testing or positive imaging findings following CSI at our institution during the COVID-19 pandemic. Methods A retrospective observational study was undertaken of consecutive patients who had CSI in our local hospitals between 1 February and 30June 2020. Electronic patient medical records (EPR) and radiology information system (RIS) database were reviewed. SARS-CoV-2 RT-PCR testing, SARS-COV2 IgG antibody testing, radiological investigations, patient management, and clinical outcomes were recorded. Lung findings were categorized according to the British Society of Thoracic Imaging (BSTI) guidelines. Reference was made to the incidence of lab-confirmed COVID-19 cases in our region. Results Overall, 1,656 lab-confirmed COVID-19 cases were identified in our upper tier local authority (UTLA), a rate of 306.6 per 100,000, as of 30June 2020. A total of 504 CSI injections were performed on 443 patients between 1 February and 30June 2020. A total of 11 RT-PCR tests were performed on nine patients (2% of those who had CSI), all of which were negative for SARS-CoV-2 RNA, and five patients (1.1%) received an SARS-CoV-2 IgG antibody test, of which 2 (0.5%) were positive consistent with prior COVID-19 infection, however both patients were asymptomatic. Seven patients (1.6%) had radiological investigations for respiratory symptoms. One patient with indeterminate ground glass change was identified. Conclusion The incidence of positive COVID-19 infection following corticosteroid injections was very low in our cohort and no adverse clinical outcomes related to COVID-19 infection following CSI were identified. Our findings are consistent with CSI likely being low risk during the COVID-19 pandemic. The results of this small observational study are supportive of the current multi-society guidelines regarding the judicious use of CSI. Cite this article: Bone Joint Open 2020;1-9:605–611.

scholarly journals Covid 19 & vertical transmission

2021 ◽  
Vol 2 (2) ◽  
pp. 278-283
Author(s):  
Kanad Dev Nayar ◽  
Shweta Gupta ◽  
Sabina Sanan ◽  
Preeti Mehra ◽  
Jaya Mishra ◽  
...  
Keyword(s):  
Public Health ◽  
Acute Respiratory Distress Syndrome ◽  
Vertical Transmission ◽  
Distress Syndrome ◽  
Case Fatality ◽  
Public Health Emergency ◽  
Cytokine Storm ◽  
Vulnerable Group ◽  
Increased Risk ◽  
Life Threatening

The current coronavirus pandemic is a serious public health emergency and has led to widespread damage globally. Although there are many coronaviruses, the particular that is responsible for this pandemic is the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).It has incubation period of around 2 to 7 days and most symptomatic patients can have fever, malaise, cough, or loss of taste or smell, with some cases developing into life threatening pneumonia and acute respiratory distress syndrome with case fatality rates range from 1% to 2%. Pregnancy is considered as a vulnerable group for any infection and knowledge regarding the possible risk of vertical transmission of this virus is very limited but is important for counseling regarding COVID-19 related pregnancy risks and for further management. COVID 19 infection in mothers basically leads to hypoxia, inflammatory response & cytokine storm. It appears around 10% of SARS- Cov-2 infected pregnant women require hospitalization with respiratory support    COVID-19 can infect the placenta as confirmed by the presence of SARSCoV- 2 viral RNA in the placenta and evidence of virions found within the syncytiotrophoblast. The possible neonatal outcomes are increased risk of

scholarly journals Comparative analysis of three point-of-care lateral flow immunoassays for detection of anti-SARS-CoV-2 antibodies in COVID-19 confirmed healthcare workers

2020 ◽  
Author(s):  
Danielle Dias Conte ◽  
Joseane Mayara Almeida Carvalho ◽  
Luciano Kleber de Souza Luna ◽  
Klinger Soares Faíco-Filho ◽  
Ana Helena Perosa ◽  
...  
Keyword(s):  
Healthcare Workers ◽  
Large Scale ◽  
Point Of Care ◽  
Antibody Test ◽  
Cost Effective ◽  
Lateral Flow ◽  
Rt Pcr ◽  
Serum Samples ◽  
Igg Antibody ◽  
Serological Tests

AbstractSince the Coronavirus Disease 2019 (COVID-19) pandemic, Brazil has the third-highest number of confirmed cases and the second-highest number of recovered patients. SARS-CoV-2 detection by real-time RT-PCR is the gold standard in certified infrastructured laboratories. However, for large-scale testing, diagnostics should be fast, cost-effective, widely available, and deployed for the community, such as serological tests based on lateral flow immunoassay (LFIA) for IgM/IgG detection. We evaluated three different commercial point-of-care (POC) LFIAs for anti-SARS-CoV-2 IgM and IgG detection in capillary whole blood of 100 healthcare workers (HCW) previously tested by RT-PCR: 1) COVID-19 IgG/IgM BIO (Bioclin, Brazil), 2) Diagnostic kit for IgM/IgG Antibody to Coronavirus (SARS-CoV-2) (Livzon, China); and 3) SARS-CoV-2 Antibody Test (Wondfo, China). A total of 84 positives and 16 negatives HCW were tested. The data was also analyzed by the number of days post symptoms (DPS) in three groups: <30 (n=26), 30-59 (n=42), and >59 (n=16). Overall detection was 85.71%, 47.62%, and 44.05% for Bioclin, Livzon, and Wondfo, respectively, with a specificity of 100%, and 98.75% for Livzon on storage serum samples. Bioclin was more sensitive (p<0.01), regardless of the DPS. Thus, the Bioclin can be used as a POC test to monitor SARS-CoV-2 seroconversion in HCW.

scholarly journals Research on pregnant women suspected of having COVID-19 in the epidemic outbreak area

2021 ◽  
Author(s):  
Hui YANG ◽  
Fan XIE ◽  
Yun Zhao ◽  
Guoqiang SUN ◽  
Yao CHENG ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Clinical Features ◽  
Antibody Test ◽  
Ct Images ◽  
Neonatal Outcomes ◽  
Rt Pcr ◽  
Igg Antibody ◽  
Outbreak Area ◽  
Maternal And Neonatal Outcomes ◽  
Pulmonary Ct

Abstract Background COVID-19 has become a major public health problem around the world. There are limited data on maternal and neonatal outcomes of pregnant women with COVID-19 pneumonia. The purpose of this study is to investigate and analysis the clinical features, imaging findings, related laboratory indicators, treatments and outcomes of maternal-fetal for cases of suspected infection COVID-19 pregnant women in outbreak area in order to provide reference for clinical work. Methods A case-control study was conducted to compare clinical features, treatment, maternal and neonatal outcomes of pregnant women with and without COVID-19 pneumonia. Results One confirmed patient who was discharged from hospital after a negative RT-PCR result, was readmitted and subsequently tested positive on RT-PCR. The vaginal delivery rate and gestational week of confirmed case group showed significantly lower than 2019 control group. Pulmonary CT images were initially same between confirmed group and suspected group, but changed over time with different trends. The two case groups shared similar dynamic profiles on blood routine test. Four confirmed cases which had COVID-19 antibody test were all positive for IgG antibody and negative for IgM antibody, via both umbilical cord blood and the newborns. Fifteen of newborns (three confirmed and twelve suspected cases) at nearly three months old were tested negative by antibodies. Conclusions Pulmonary CT images showed different trends with the extending of time between confirmed group and suspected group. Blood test results weren’t strong enough to make differential diagnosis between two case groups. Perform antibody test can understand the antibody responses mounted in response to the virus, and to identify individuals who are potentially immune to re-infection. Infant obtain COVID-19 IgG antibody from maternal that only may last for less than three months.

EVALUATION OF PERFORMANCE OF NINE SEROLOGICALASSAYS FOR THE DETECTION OF SARS-COV-2 ANTIBODIES.

2021 ◽  
pp. 60-62
Author(s):  
Tagajdid Mohamed Rida ◽  
Konzi Clémence ◽  
El Kochri Safae ◽  
Elannaz Hicham ◽  
Abi Rachid ◽  
...  
Keyword(s):  
Clinical Performance ◽  
Current Knowledge ◽  
False Negative ◽  
Antibody Test ◽  
Antibody Detection ◽  
Rt Pcr ◽  
Igg Antibody ◽  
Serological Tests ◽  
Blood Samples ◽  
Test Kit

Introduction: Currently, polymerase chain reaction (PCR) based viral RNAdetection is the standard for COVID-19 diagnosis [2]. Though, RNA testing based on throat or nasopharyngeal swabs has shown a number of false-negative results. Antibody detection tests have been developed to detect specic antibodies, IgM and IgG, to SRAS-CoV-2 virus. The clinical relevance of these tests is still under evaluation and is highly related to their clinical performance. Our objective is to assess analytical performances of nine SARS-CoV-2 antibodies immunoassays. Materiel and Method: We collected 80 blood samples from PCR-conrmed COVID-19 patients diagnosed in our Virology department (20 samples collected at day 10 after the onset of symptoms, 60 collected after day 14 following the onset of symptoms) and 20 blood samples from patients SARS-CoV-2 RT-PCR negative. All sera were tested with nine SARS-CoV-2 antibodies immunoassays ARCHITECT SARS-CoV-2 IgG® (Abbott), COVID-19 VIRCLIA® IgG MONOTEST (Vircell), COVID-19 VIRCLIA® IgM+IgA MONOTEST (Vircell), COVID-19 ELISA IgG® (Vircell), COVID-19 ELISA IgM+IgA® (Vircell), Elecsys® Anti-SARS-CoV-2 (Roche), FREND® COVID-19 IgG/IgM Duo (NanoEntek), COVID-PRESTO® (AAZ) and COVID-19 (SARS-CoV-2) IgM/IgG Antibody Test Kit® (Labnovation Technologies). Results: Sensitivity of tests increases once the seroconversion to anti-SARS-CoV-2 IgG positive in most individuals occurs toward the end of week 2 post-infection. COVID-19 PRESTO had the best accuracy in our study showing 100% sensitivity after day 14 following the onset of symptoms. All of the tests had a specicity of 100%. Conclusion: Serological tests are sensitive for the latest stages of COVID-19 infection. Recommendations on using SRAS-COV-2 antibody detection tests are continuously improving based on current knowledge of host antibody responses during infection. They are of great value in cases presenting COVID-19 symptoms with negative RT-PCR.

Kajian Terkini CoronaVirus Disease 2019 (COVID-19)

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Chicy Widya Morfi
Keyword(s):  
Public Health ◽  
Upper Airway ◽  
Hubei Province ◽  
Public Health Emergency ◽  
Lower Airway ◽  
Rt Pcr ◽  
Microbiological Method ◽  
The Public

The COVID-19 outbreak in Wuhan, Hubei Province, China, caused by a newly known coronavirus strain, SARS-CoV-2, up to March 3th, 2020, has caused 90.870 confirmed cases to be reported from 72 countries (including Indonesia) with 3.112 deaths (CFR 3,4%). Upper airway swab and lower airway aspirate specimens from suspected patients are required for examination by the RT-PCR microbiological method for establishing COVID-19. There are no specific antivirals for the management of COVID-19. On January, 30th, 2020 WHO has established Covid-19 as the Public Health Emergency of International Concern (PHEIC), but the increase in the number of cases is fast enough so that on March,11th 2020, WHO has established Covid-19 as a pandemic.

scholarly journals Evaluating ELISA, Immunofluorescence, and Lateral Flow Assay for SARS-CoV-2 Serologic Assays

2020 ◽  
Vol 11 ◽  
Author(s):  
Moïse Michel ◽  
Amar Bouam ◽  
Sophie Edouard ◽  
Florence Fenollar ◽  
Fabrizio Di Pinto ◽  
...  
Keyword(s):  
Rapid Test ◽  
Antibody Test ◽  
Immunofluorescence Assay ◽  
Lateral Flow ◽  
Antibody Detection ◽  
Rt Pcr ◽  
Igg Antibody ◽  
Reliable Determination ◽  
Test Kit ◽  
Serological Status

BackgroundThe SARS-CoV-2 outbreak has emerged at the end of 2019. Aside from the detection of viral genome with specific RT-PCR, there is a growing need for reliable determination of the serological status. We aimed at evaluating five SARS-CoV-2 serology assays.MethodsAn in-house immunofluorescence assay (IFA), two ELISA kits (EUROIMMUN® ELISA SARS-CoV-2 IgG and NovaLisa® SARS-CoV-2 IgG and IgM) and two lateral flow assays (T-Tek® SARS-CoV-2 IgG/IgM Antibody Test Kit and Sure Bio-tech® SARS-CoV-2 IgM/IgG Antibody Rapid Test) were compared on 40 serums from RT-PCR-confirmed SARS-CoV-2 infected patients and 10 SARS-CoV-2 RT-PCR negative subjects as controls.ResultsControl subjects tested negative for SARS-CoV-2 antibodies with all five systems. Estimated sensitivities varied from 35.5 to 71.0% for IgG detection and from 19.4 to 64.5% for IgM detection. For IgG, in-house IFA, EuroImmun, T-Tek and NovaLisa displayed 50–72.5% agreement with other systems except IFA vs EuroImmun and T-Tek vs NovaLisa. Intermethod agreement for IgM determination was between 30 and 72.5%.DiscussionThe overall intermethod agreement was moderate. This inconsistency could be explained by the diversity of assay methods, antigens used and immunoglobulin isotype tested. Estimated sensitivities were low, highlighting the limited value of antibody detection in CoVID-19.ConclusionComparison of five systems for SARS-CoV-2 IgG and IgM antibodies showed limited sensitivity and overall concordance. The place and indications of serological status assessment with currently available tools in the CoVID-19 pandemic need further evaluations.

scholarly journals Comparison of real-time reverse transcriptase polymerase chain reaction (RT-PCR) and IgM and IgG antibody test for the diagnosis of SARS-CoV-2 infection

2020 ◽  
Vol 9 (1) ◽  
pp. 78-86
Author(s):  
Ömer ACER ◽  
Osman ÖZÜDOĞRU
Keyword(s):  
Computed Tomography ◽  
Polymerase Chain Reaction ◽  
Antibody Test ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Igg Antibody ◽  
Positive Ratio ◽  
Severe Group ◽  
Polymerase Chain ◽  
Pcr Test

In the present study, we compared the real-time reverse-transcription polymerase chain reaction (RT-PCR) and total IgM-IgG antibody tests for diagnosis SARS-CoV-2 patients. SARS-CoV-2 patients were divided into four additional subgroups according to clinical examination, and Computed Tomography (CT) for SARS-CoV-2. Groups were included 60 mild cases, 111 moderate cases, 53 severe cases, and 105 normal cases. In a mild group, 52.5% of 60 cases were found to be male, 45.9% female, and the average age was found as 38.4 ±2.011. The positive ratio was found as 80.3% in the RT-PCR test, while 39.3% in total IgM/IgG. In a moderate group, 49.1% of 111 cases were found to be male, 50% female, and the average age was 45.05 ±1.519. The positive ratio was found as 85.7% in the RT-PCR test while 54.5% in total IgM/IgG. In a severe group, 53.7%of 53 cases were found to be male, 44.4% female, and the average age was 55.5±2.122. The positive ratio was found as 75.9% both in RT-PCR and total IgM/IgG tests. In a normal group with no involvement according to Computed Tomography (CT), 49.1%of 105 cases were found to be male, 50% female, and the average age was found as 34.8±1.391. The positive ratio was found as 95.3% in the RT-PCR test while 5.7% in total IgM/IgG. Chronic diseases were detected more in severe cases, suggesting that persons who have chronic diseases or decreased immunity, such as diabetes mellitus, cardiovascular diseases, hypertension, and lung disease, are at a higher risk for developing severe COVID-19 if they are infected with SARS-CoV-2. According to our results, we can suggest a higher detection sensibility in RT-PCR than in total IgM/IgG antibody test for mild, moderate and normal group, while the detection sensibility of IgM/IgG antibody increases in a severe group with bilateral diffuse involvement according to CT.

scholarly journals The comparative superiority of IgM-IgG antibody test to real-time reverse transcriptase PCR detection for SARS-CoV-2 infection diagnosis

2020 ◽  
Author(s):  
Rui Liu ◽  
Xinghui Liu ◽  
Huan Han ◽  
Muhammad Adnan Shereen ◽  
Zhili Niu ◽  
...  
Keyword(s):  
Real Time ◽  
False Negative ◽  
Antibody Test ◽  
Pcr Detection ◽  
Antibody Detection ◽  
Rt Pcr ◽  
Igg Antibody ◽  
Positive Ratio ◽  
Infection Diagnosis ◽  
Significant Difference

AbstractBackgroundAs the increasing number of Corona Virus Disease 2019 (COVID-19) patients caused by the severe acute respiratory coronavirus 2 (SARS-CoV-2), which caused an outbreak initiated from Wuhan, China in December, 2019, the clinical features and treatment of COVID-19 patients have been understood. However, it is urgent to need the rapid and accurate detection for SARS-CoV-2 infection diagnosis. We aimed to evaluate the antibodies-based and nucleic acid-based tests (NAT) for SARS-CoV-2-infected patients.MethodWe retrospectively and observationally studied 133 patients diagnosed with SARS-CoV-2 and admitted in Renmin Hospital of Wuhan University, China, from Feb 17 to Mar 1, 2020. Demographic data, symptoms, clinical examination, laboratory tests, and clinical outcomes were collected. Data were compared between IgM-IgG antibody test and real-time RT-PCR detection for COVID-19 patients.ResultsOf 133 patients with SARS-CoV-2 infection, there were 44 moderate cases, 52 severe cases, and 37 critical cases with no significant difference of gender and age among three subgroups. Overall, the positive ratio in IgM antibody test was higher than in RT-PCR detection. In RT-PCR detection, the positive ratio was 65.91%, 71.15%, and 67.57% in moderate, severe, and critical cases, respectively. Whereas, the positive ratio of IgM/IgG antibody detection in patients was 79.55%/93.18%, 82.69%/100%, and 72.97%/97.30% in moderate, severe, and critical cases, respectively. Moreover, the concentrations of antibodies were also measured in three subgroups.ConclusionThe IgM-IgG antibodies-based test exhibited a comparative superiority to the NAT for COVID-19 diagnosis, which provides an effective complement to the false negative results from NAT for SARS-CoV-2 infection diagnosis.

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