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1.
Epidemiol Infect ; 150: e58, 2022 03 03.
Artigo em Inglês | MEDLINE | ID: mdl-35287778

RESUMO

COVID-19 serosurvey provides a better estimation of people who have developed antibody against the infection. But limited information on such serosurveys in rural areas poses many hurdles to understand the epidemiology of the virus and to implement proper control strategies. This study was carried out in the rural catchment area of Model Rural Health Research Unit in Odisha, India during March-April 2021, the initial phase of COVID vaccination. A total of 60 village clusters from four study blocks were identified using probability proportionate to size sampling. From each cluster, 60 households and one eligible participant from each household (60 per cluster) were selected for the collection of blood sample and socio-demographic data. The presence of SARS-CoV-2 antibody was tested using the Elecsys Anti-SARS-CoV-2 immunoassay. The overall seroprevalence after adjusting for test performance was 54.21% with an infection to case ratio of 96.89 along with 4.25% partial and 6.79% full immunisation coverage. Highest seroprevalence was observed in the age group of 19-44 years and females had both higher seroprevalence as well as vaccine coverage. People of other backward caste also had higher seropositivity than other caste categories. The study emphasises on continuing surveillance for COVID-19 cases and prioritizing COVID-19 vaccination for susceptible groups for better disease management.


Assuntos
Vacinas contra COVID-19/administração & dosagem , COVID-19/epidemiologia , População Rural , SARS-CoV-2/imunologia , Adulto , Anticorpos Antivirais/sangue , COVID-19/prevenção & controle , Análise por Conglomerados , Estudos de Coortes , Comorbidade , Estudos Transversais , Feminino , Humanos , Imunoensaio/métodos , Índia/epidemiologia , Luminescência , Masculino , Pessoa de Meia-Idade , Estudos Soroepidemiológicos , Fatores Sociodemográficos , Inquéritos e Questionários , Fatores de Tempo , Vacinação/estatística & dados numéricos , Adulto Jovem
2.
Indian J Med Res ; 156(2): 228-239, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-36629182

RESUMO

Background & objectives: Serosurvey of COVID-19 provides a better estimation of people who have developed antibodies against the infection. Undertaking such a serosurvey in certain districts of India which are densely populated with prominent tribes can provide valuable information regarding seropravelance of SARS-CoV-2 antibodies among such indigenous populations. In this context, two rounds of population-based, cross-sectional serosurveys for SARS-CoV-2 IgG antibody were carried out in Jharkhand, a tribal-dominated State of India, to compare the seroprevalence of SARS-CoV-2 infection and to determine the associated demographic risk factors. Methods: The surveys were carried out in June 2020 and February 2021 in ten districts of the State of Jharkhand. Blood samples were collected from the residents of the selected districts by random sampling and tested for anti-SARS-CoV-2 antibodies using an automated chemiluminescence immunoassay platform. A total of 4761 and 3855 eligible participants were included in round 1 and round 2, respectively. Results: The age- and gender-standardized seroprevalence for COVID-19 during round 1 was 0.54 per cent (0.36-0.80) that increased to 41.69 per cent (40.16-43.22) during round 2 with a gap of eight months in between. The seropositivity among male and female participants was 0.73 and 0.45 per cent, respectively, during the first round and 51.35 and 33.70 per cent, respectively, during the second round. During the first round, 17.37 per cent of the participants were tribal with seropositivity of 0.24 per cent (0.02-0.87), and during the second round, 21.14 per cent were tribal with seropositivity of 39.14 per cent (35.77-42.59). Compared to tribal group, non-tribal participants had an adjusted odds of 1.24 (95% confidence interval=1.04-1.48) for SARS-CoV-2 seropositivity. Interpretation & conclusions: COVID-19 seroprevalence was found to be low during the first round (0.54%) of the survey, possibly due to the travel restrictions during lockdown better adherence to social distancing and wearing of face masks among the people. Understanding the dynamics of SARS-CoV-2 transmission and the susceptibility to infection at the individual as well as community level will inform decision and help policy makers to design and implement effective public health strategies to mitigate the pandemic in this State.


Assuntos
COVID-19 , SARS-CoV-2 , Feminino , Humanos , Masculino , Imunoglobulina G , COVID-19/epidemiologia , Estudos Transversais , Estudos Soroepidemiológicos , Controle de Doenças Transmissíveis , Índia/epidemiologia , Anticorpos Antivirais
3.
Indian J Med Res ; 155(1): 156-164, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-35859441

RESUMO

Background & objectives: COVID-19 pandemic has triggered social stigma towards individuals affected and their families. This study describes the process undertaken for the development and validation of scales to assess stigmatizing attitudes and experiences among COVID-19 and non-COVID-19 participants from the community. Methods: COVID-19 Stigma Scale and Community COVID-19 Stigma Scale constituting 13 and six items, respectively, were developed based on review of literature and news reports, expert committee evaluation and participants' interviews through telephone for a multicentric study in India. For content validity, 61 (30 COVID-19-recovered and 31 non-COVID-19 participants from the community) were recruited. Test-retest reliability of the scales was assessed among 99 participants (41 COVID-19 recovered and 58 non-COVID-19). Participants were administered the scale at two-time points after a gap of 7-12 days. Cronbach's alpha, overall percentage agreement and kappa statistics were used to assess internal consistency and test-retest reliability. Results: Items in the scales were relevant and comprehensible. Both the scales had Cronbach's α above 0.6 indicating moderate-to-good internal consistency. Test-retest reliability assessed using kappa statistics indicated that for the COVID-19 Stigma Scale, seven items had a moderate agreement (0.4-0.6). For the Community COVID-19 Stigma Scale, four items had a moderate agreement. Interpretation & conclusions: Validity and reliability of the two stigma scales indicated that the scales were comprehensible and had moderate internal consistency. These scales could be used to assess COVID-19 stigma and help in the development of appropriate stigma reduction interventions for COVID-19 infected, and mitigation of stigmatizing attitudes in the community.


Assuntos
COVID-19 , Estigma Social , Humanos , Índia/epidemiologia , Pandemias , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
4.
Indian J Med Res ; 153(5&6): 637-648, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-34596596

RESUMO

Background & objectives: The healthcare system across the world has been overburdened due to the COVID-19 pandemic impacting healthcare workers (HCWs) in different ways. The present study provides an insight into the psychosocial challenges faced by the HCWs related to their work, family and personal well-being and the associated stigmas. Additionally, the coping mechanisms adopted by them and their perceptions on the interventions to address these challenges were also explored. Methods: A qualitative study was conducted between September and December 2020 through in-depth telephonic interviews using an interview guide among 111 HCWs who were involved in COVID-19 management across 10 States in India. Results: HCWs report major changes in work-life environment that included excessive workload with erratic timings accentuated with the extended duration of inconvenient personal protection equipment usage, periods of quarantine and long durations of separation from family. Family-related issues were manifold; the main challenge being separated from family, the challenge of caregiving, especially for females with infants and children, and fears around infecting family. Stigma from the community and peers fuelled by the fear of infection was manifested through avoidance and rejection. Coping strategies included peer, family support and the positive experiences manifested as appreciation and recognition for their contribution during the pandemic. Interpretation & conclusions: The study demonstrates the psychological burden of HCWs engaged with COVID-19 care services. The study findings point to need-based psychosocial interventions at the organizational, societal and individual levels. This includes a conducive working environment involving periodic evaluation of the HCW problems, rotation of workforce by engaging more staff, debunking of false information, community and HCW involvement in COVID sensitization to allay fears and prevent stigma associated with COVID-19 infection/transmission and finally need-based psychological support for them and their families.


Assuntos
COVID-19 , Pandemias , Criança , Feminino , Pessoal de Saúde , Humanos , Percepção , SARS-CoV-2
5.
J Clin Lab Anal ; 35(7): e23835, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34181279

RESUMO

BACKGROUND: Active detection of SARS-CoV-2 infection through testing is elementary for the control of COVID-19 pandemic. The implementation of large-scale RT-PCR testing has led to a rise in the demand for testing kits whose availability is always a concern. OBJECTIVE: To find out the feasibility of pooled testing in a high-throughput platform. METHODOLOGY: Pooled testing was conducted in Roche cobas 6800 in 2 methods. Firstly, the simple two-stage testing algorithm was conducted for 1410 samples individually and then as pooled samples. Secondly, we evaluated the sensitivity of cobas 6800 for the detection of a single positive sample within a pool of negative samples. RESULTS: Implementing the five-sample Dorfman pooling to test 1410 samples, we identified 42 (2.9%) individual SARS-CoV-2-positive samples and 27 (9.5%) positive pool samples. The pooling strategy precisely identified all the positive samples. All individually negative samples were also accurately determined by pooling. There was 100% sensitivity of detecting positive samples in a pool of negative samples even up to 1:64 dilution. There was a threefold increase in total throughput in one-third of the cost per day. CONCLUSION: A high-throughput platform such as Cobas 6800 can effectively increase the testing capacity by twofold to threefold by adopting the pooled testing strategy for successful management of SARS-CoV-2 and helping in the containment of community transmission.


Assuntos
Teste para COVID-19/métodos , COVID-19/diagnóstico , COVID-19/virologia , Ensaios de Triagem em Larga Escala/métodos , SARS-CoV-2/fisiologia , Adolescente , Adulto , Idoso , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
6.
Artigo em Inglês | MEDLINE | ID: mdl-36674296

RESUMO

BACKGROUND/OBJECTIVES: Globally, the COVID-19 pandemic and its prevention and control policies have impacted maternal and child health (MCH) services. This study documents the challenges faced by patients in accessing MCH services, and the experiences of health care providers in delivering those services during the COVID-19 outbreak, explicitly focusing on the lockdown period in India. METHODS: A cross-sectional study (rapid survey) was conducted in 18 districts from 6 states of India during March to June, 2020. The sample size included 540 MCH patients, 18 gynaecologists, 18 paediatricians, 18 district immunisation officers and 108 frontline health workers. Bivariate analysis and multivariable analysis were used to assess the association between sociodemographic characteristics, and challenges faced by the patients. RESULTS: More than one-third of patients (n = 212; 39%) reported that accessing MCH services was a challenge during the lockdown period, with major challenges being transportation-related difficulties (n = 99; 46%) unavailability of hospital-based services (n = 54; 23%) and interrupted outreach health services (n = 39; 18.4%). The supply-side challenges mainly included lack of infrastructural preparedness for outbreak situations, and a shortage of human resources. CONCLUSIONS/RECOMMENDATIONS: A holistic approach is required that focuses on both preparedness and response to the outbreak, as well reassignment and reinforcement of health care professionals to continue catering to and maintaining essential MCH services during the pandemic.


Assuntos
COVID-19 , Serviços de Saúde da Criança , Serviços de Saúde Materna , Criança , Humanos , Feminino , Gravidez , COVID-19/epidemiologia , Estudos Transversais , Pandemias , Controle de Doenças Transmissíveis , Índia/epidemiologia
7.
Int J Disaster Risk Reduct ; 93: 103776, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37303828

RESUMO

Introduction: Individual and community characteristics predictive of knowledge, perception, and attitude on COVID-19, specifically on gender, have not been adequately explored. Objective: To examine the gender differences in COVID-19 knowledge, self-risk perception and public stigma among the general community and to understand other socio-demographic factors which were predictive of them. Method: A nationally representative cross-sectional multi-centric survey was conducted among adult individuals(≥18 yrs) from the community member (N = 1978) from six states and one union territory of India between August 2020 to February 2021. The participants were selected using systematic random sampling. The data were collected telephonically using pilot-tested structured questionnaires and were analyzed using STATA. Gender-segregated multivariable analysis was conducted to identify statistically significant predictors (p < 0.05) of COVID-19-related knowledge, risk perception, and public stigma in the community. Results: Study identified significant differences between males and females in their self-risk perception (22.0% & 18.2% respectively) and stigmatizing attitude (55.3% & 47.1% respectively). Highly educated males and females had higher odds of having COVID-19 knowledge (aOR: 16.83: p < 0.05) than illiterates. Highly educated women had higher odds of having self-risk perception (aOR: 2.6; p < 0.05) but lower public stigma [aOR: 0.57; p < 0.05]. Male rural residents had lower odds of having self-risk perception and knowledge [aOR: 0.55; p < 0.05 & aOR: 0.72; p < 0.05] and female rural residents had higher odds of having public stigma [aOR: 1.36; p < 0.05]. Conclusion: Our study findings suggest the importance of considering thegender differentials and their background, education status and residential status in designing effective interventions to improve knowledge and reduce risk perception and stigma in the community about COVID-19.

8.
Healthcare (Basel) ; 10(1)2022 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-35052251

RESUMO

Community health workers (CHW) faced increased challenges in delivering maternal and child health services during the current COVID-19 pandemic. In addition to routine services, they were also engaged in pandemic management. In view of a dearth of evidence, the current study explores the challenges faced by CHWs while rendering maternal and child health services. A qualitative study through in-depth interviews (IDI) and focus group discussions (FGD) in six districts of Odisha was conducted from February to April 2021. Data were analyzed using MAXQDA software. Personal-level challenges, like lack of family support, stress, and fear of contracting COVID-19; facility-level challenges, like transportation problems and inadequate personal protective measures; and community-level challenges, like stigma, resistance, and lack of community support were major hindrances in provisioning routine MCH services. Prevailing myths and misconceptions concerning COVID-19 were factors behind stigma and resistance. Sharing experiences with family, practicing yoga and pranayam, engaging ambulance bikes, financial assistance to mothers, counseling people, and involving community leaders were some effective strategies to address these challenges. Development and implementation of appropriate strategy guidelines for addressing the challenges of frontline warriors will improve their work performance and achieve uninterrupted MCH services during pandemics or similar health emergencies.

9.
PLoS One ; 17(9): e0275172, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36156092

RESUMO

INTRODUCTION: Overweight and obesity among the adolescent population are emerging as worldwide epidemics. Its increasing occurrence in India is highly concerning. Amidst the burden of malnutrition, where undernutrition is a long-standing health problem, the rising concerns around childhood overweight/obesity has several repercussions for this population. The aim of this scoping review is to map the evidence of the prevalence and contributing factors of overweight and obesity among adolescents (10 to 19 years) in the Indian population. METHODS: The study will be conducted according to the Arksey and O'Malley scoping review framework and the Joanna Briggs institute Reviewers' manual. The Population, Concept and Context strategy (PCC) will ensure the review questions, eligibility criteria, and search strategy. The Systematic Review and Meta-analysis: Extension for Scoping Review (PRISMA-ScR) will be used for the findings of the study of Scoping Review. The Mixed Methods Appraisal Tool (MMAT), Version- 2018 will be used to assess the methodological quality of all relevant studies. Literature search will be done using electronic databases: PubMed, Google Scholar, SCOPUS, EMBASE, and Cochrane library by specific keywords such as "prevalence"; "overweight"; "obesity"; "obese"; "malnutrition"; "BMI"; "adolescent"; "teenager"; and "youth" etc. Additional studies will be considered using cross-references.


Assuntos
Sobrepeso , Obesidade Infantil , Adolescente , Criança , Humanos , Incidência , Índia/epidemiologia , Sobrepeso/epidemiologia , Obesidade Infantil/epidemiologia , Obesidade Infantil/etiologia , Prevalência , Projetos de Pesquisa , Literatura de Revisão como Assunto , Revisões Sistemáticas como Assunto
10.
PLoS One ; 17(5): e0268106, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35536838

RESUMO

INTRODUCTION: Ensuring accessible and quality health care for women and children is an existing challenge, which is further exacerbated during pandemics. There is a knowledge gap about the effect of pandemics on maternal, newborn, and child well-being. This systematic review was conducted to study maternal and child health (MCH) services utilization during pandemics (Zika, Ebola, and COVID-19) and the effectiveness of various interventions undertaken for ensuring utilization of MCH services. METHODOLOGY: A systematic and comprehensive search was conducted in MEDLINE/PubMed, Cochrane CENTRAL, Embase, Epistemonikos, ScienceDirect, and Google Scholar. Of 5643 citations, 60 potential studies were finally included for analysis. The included studies were appraised using JBI Critical appraisal tools. Study selection and data extraction were done independently and in duplicate. Findings are presented narratively based on the RMNCHA framework by World Health Organization (WHO). RESULTS: Maternal and child health services such as antenatal care (ANC) visits, institutional deliveries, immunization uptake, were greatly affected during a pandemic situation. Innovative approaches in form of health care services through virtual consultation, patient triaging, developing dedicated COVID maternity centers and maternity schools were implemented in different places for ensuring continuity of MCH care during pandemics. None of the studies reported the effectiveness of these interventions during pandemic-related health emergencies. CONCLUSION: The findings suggest that during pandemics, MCH care utilization often gets affected. Many innovative interventions were adopted to ensure MCH services. However, they lack evidence about their effectiveness. It is critically important to implement evidence-based appropriate interventions for better MCH care utilization.


Assuntos
COVID-19 , Doença pelo Vírus Ebola , Serviços de Saúde Materna , Serviços de Saúde Materno-Infantil , Infecção por Zika virus , Zika virus , COVID-19/epidemiologia , Criança , Saúde da Criança , Emergências , Feminino , Doença pelo Vírus Ebola/epidemiologia , Humanos , Recém-Nascido , Pandemias , Gravidez
11.
PLoS One ; 17(11): e0277422, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36395115

RESUMO

INTRODUCTION: Suicide is one of the serious health problems among Indian adolescents. Adolescence helps with the transition of an individual into an adult, so it is important to understand the suicidal behavior of adolescents. Several studies have been carried out in different states in India on the suicidal behavior of adolescents, but there is no review that studied the national patterns, trends, and major risk factors. Therefore, this review aims to study the patterns, trends, and major risk factors of suicidal behavior among Indian adolescents. METHODS: The study will be conducted as per the Arksey and O'Malley scoping review framework and the Joanna Briggs institute Reviewers' manual. The Population, Concept and Context strategy (PCC) will ensure the review questions, eligibility criteria and search strategy. The Systematic Review and Meta-analysis: Extension for Scoping Review (PRISMA-ScR) will be used for the findings of the study of Scoping Review. The literature search will be done using electronic databases: PubMed, Google Scholar, SCOPUS, EMBASE, Psycinfo, Web of Science, Google, and Cochrane library by specific keywords such as "patterns"; "suicide"; "trends"; "risk factors"; "depression"; "anxiety"; "mental health"; "adolescent"; "teenager"; and "youth";" India" etc. Additional studies will be considered using cross-references. ETHICS AND DISSEMINATION: This study does not involve the collection of primary data; there is no requirement of any ethical approval. STRENGTHS AND LIMITATIONS OF THE STUDY: The proposed scoping review is the first study on patterns, trends, and major risk factors of adolescent suicide in India as per the information available on the online platforms.This proposed scoping review will bring together all the previously available data into one place for better study.This evidence-based study will be highly helpful for healthcare professionals and policymakers. This study will be limited to English language and electronically available evidence.


Assuntos
Projetos de Pesquisa , Ideação Suicida , Humanos , Adolescente , Saúde Mental , Índia/epidemiologia , Revisões Sistemáticas como Assunto , Literatura de Revisão como Assunto
12.
PLoS One ; 17(3): e0264956, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35271652

RESUMO

BACKGROUND: COVID-19 has inundated the entire world disrupting the lives of millions of people. The pandemic has stressed the healthcare system of India impacting the psychological status and functioning of health care workers. The aim of this study is to determine the burnout levels and factors associated with the risk of psychological distress among healthcare workers (HCW) engaged in the management of COVID 19 in India. METHODS: A cross-sectional study was conducted from 1 September 2020 to 30 November 2020 by telephonic interviews using a web-based Google form. Health facilities and community centres from 12 cities located in 10 states were selected for data collection. Data on socio-demographic and occupation-related variables like age, sex, type of family, income, type of occupation, hours of work and income were obtained was obtained from 967 participants, including doctors, nurses, ambulance drivers, emergency response teams, lab personnel, and others directly involved in COVID 19 patient care. Levels of psychological distress was assessed by the General health Questionnaire -GHQ-5 and levels of burnout was assessed using the ICMR-NIOH Burnout questionnaire. Multivariable logistic regression analysis was performed to identify factors associated with the risk of psychological distress. The third quartile values of the three subscales of burnout viz EE, DP and PA were used to identify burnout profiles of the healthcare workers. RESULTS: Overall, 52.9% of the participants had the risk of psychological distress that needed further evaluation. Risk of psychological distress was significantly associated with longer hours of work (≥ 8 hours a day) (AOR = 2.38, 95% CI(1.66-3.41), income≥20000(AOR = 1.74, 95% CI, (1.16-2.6); screening of COVID-19 patients (AOR = 1.63 95% CI (1.09-2.46), contact tracing (AOR = 2.05, 95% CI (1.1-3.81), High Emotional exhaustion score (EE ≥16) (AOR = 4.41 95% CI (3.14-6.28) and High Depersonalisation score (DP≥7) (AOR = 1.79, 95% CI (1.28-2.51)). About 4.7% of the HCWs were overextended (EE>18); 6.5% were disengaged (DP>8) and 9.7% HCWs were showing signs of burnout (high on all three dimensions). CONCLUSION: The study has identified key factors that could have been likely triggers for psychological distress among healthcare workers who were engaged in management of COVID cases in India. The study also demonstrates the use of GHQ-5 and ICMR-NIOH Burnout questionnaire as important tools to identify persons at risk of psychological distress and occurrence of burnout symptoms respectively. The findings provide useful guide to planning interventions to mitigate mental health problems among HCW in future epidemic/pandemic scenarios in the country.


Assuntos
Esgotamento Profissional/psicologia , COVID-19/psicologia , Pessoal de Saúde/psicologia , Adulto , Idoso , Esgotamento Profissional/epidemiologia , Esgotamento Psicológico/epidemiologia , Estudos Transversais , Depressão/epidemiologia , Feminino , Humanos , Índia/epidemiologia , Entrevistas como Assunto , Masculino , Saúde Mental/tendências , Pessoa de Meia-Idade , Pandemias , Angústia Psicológica , SARS-CoV-2/patogenicidade , Inquéritos e Questionários
13.
Healthcare (Basel) ; 9(7)2021 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-34209238

RESUMO

Maternal and child health (MCH) has been a global priority for many decades and is an essential public health service. Ensuring seamless delivery is vital for desirable MCH outcomes. This systematic review outlined the challenges in accessing and continuing MCH services during public health emergencies-pandemics and disasters. A comprehensive search approach was built based on keywords and MeSH terms relevant to 'MCH services' and 'pandemics/disasters'. The online repositories Medline, CINAHL, Psyc INFO, and Epistemonikos were searched for studies. We included twenty studies-seven were on the Ebola outbreak, two on the Zika virus, five related to COVID-19, five on disasters, and one related to conflict situations. The findings indicate the potential impact of emergencies on MCH services. Low utilization and access to services have been described as common challenges. The unavailability of personal safety equipment and fear of infection were primary factors that affected service delivery. The available evidence, though limited, indicates the significant effect of disasters and pandemics on MCH. However, more primary in-depth studies are needed to understand better the overall impact of emergencies, especially the COVID-19 pandemic, on MCH. Our synthesis offers valuable insights to policymakers on ensuring the uninterrupted provision of MCH services during an emergency.

14.
Int J Infect Dis ; 104: 491-500, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33450373

RESUMO

OBJECTIVE: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has affected the whole world, including Odisha, a state in eastern India. Many people have migrated to the state from different countries as well as other states during this SARS-CoV-2 pandemic. The aim of this study was to analyse the receptor-binding domain (RBD) sequence of the spike protein from isolates collected from throat swab samples of COVID-19-positive patients and further to assess the RBD affinity for angiotensin-converting enzyme 2 (ACE2) of different species, including humans. METHODS: Whole-genome sequencing for 35 clinical SARS-CoV-2 isolates from COVID-19-positive patients was performed by ARTIC amplicon-based sequencing. Sequence analysis and phylogenetic analysis were performed for the spike region and the RBD region of all isolates. The interaction between the RBD and ACE2 of five different species was also analysed. RESULTS: The spike region of 32 isolates showed one or multiple alterations in nucleotide bases in comparison with the Wuhan reference strain. One of the identified mutations, at position 1204 (Ref A, RMRC 22 C), in the RBD coding region of the spike protein showed stronger binding affinity for human ACE2. Furthermore, RBDs of all the Indian isolates showed binding affinity for ACE2 of different species. CONCLUSION: As mutant RBD showed stronger interaction with human ACE2, it could potentially result in higher infectivity. The binding affinity of the RBDs for ACE2 of all five species studied suggests that the virus can infect a wide variety of animals, which could also act as natural reservoir for SARS-CoV-2.


Assuntos
Enzima de Conversão de Angiotensina 2/análise , Enzima de Conversão de Angiotensina 2/metabolismo , SARS-CoV-2/genética , Análise de Sequência , Glicoproteína da Espícula de Coronavírus/química , Glicoproteína da Espícula de Coronavírus/metabolismo , Sequenciamento Completo do Genoma , Animais , Sítios de Ligação , Humanos , Índia/epidemiologia , Mutação , Filogenia , Ligação Proteica , Domínios Proteicos
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