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EuropePMC; 2020.
Preprint in English | EuropePMC | ID: ppcovidwho-320070


Background: Medical students’ psychological response to societal lockdown during the covid-19 pandemic has not been studied much. Our aim was to assess levels of anxiety and depression among medical students during the initial stages of the pandemic in Nepal and relate their distress to psychosocial and other relevant situational variables. Materials: and Methods: A cross-sectional study with an online questionnaire was conducted among medical students at different colleges in Nepal. Hospital Anxiety and Depression Scale (HADS) detected manifestations of anxiety and depression. The covariates were explored by logistic regression analyses. Results: : A total 416 medical students [mean age: 22.2 (2.1);males 57.7%, females 42.3%] participated. HADS-anxiety scores [mean: 7.1(4.3)] were significantly and positively correlated with HADS-depression [mean: 5.9 (4.1)] (r=0.695;p<0.001). Point prevalence of total HADS caseness (HADS-T) was 26.7%. Specific HADS-defined caseness were: anxiety (HADS-A) 11.8%, depression (HADS-D) 5.5%, and comorbid anxiety and depression (HADS-cAD) 9.4%. All four types of caseness were significantly more prevalent among students with a history of mental problems (AOR=4.7, 3.2, 2.6, and 3.2 respectively). HADS-T was higher among those with a concurrent physical illness (AOR=2.4). HADS-T, HADS-A and HADS-D scores were higher among the age group >22 years (AOR= 2.2, 2.5 and 4.4 respectively). HADS-cAD was almost three-times higher among those with a possible COVID-19 exposure (AOR=2.8). Conclusion: A significant number of medical students in Nepal suffered from high levels of anxiety and depression during the covid-19 shut-down. The students in the higher (>22 years) age group, those with past mental disorders, a possible covid-19 exposure, and a concurrent physical illness showed elevated levels of anxiety and/or depression.

ACS Sens ; 6(9): 3468-3476, 2021 09 24.
Article in English | MEDLINE | ID: covidwho-1392782


This research reveals the promising functionalization of graphene oxide (GrO)-glazed double-interdigitated capacitive (DIDC) biosensing platform to detect severe acute respiratory syndrome coronavirus (SARS-CoV-2) spike (S1) proteins with enhanced selectivity and rapid response. The DIDC bioactive surface consisting of Pt/Ti featured SiO2 substrate was fabricated using GrO/EDC-NHS/anti-SARS-CoV-2 antibodies (Abs) which is having layer-by-layer interface self-assembly chemistry method. This electroactive immune-sensing platform exhibits reproducibility and sensitivity with reference to the S1 protein of SARS-CoV-2. The outcomes of analytical studies confirm that GrO provided a desired engineered surface for Abs immobilization and amplified capacitance to achieve a wide detection range (1.0 mg/mL to 1.0 fg/mL), low limit of detection (1 fg/mL) within 3 s of response time, good linearity (18.56 nF/g), and a high sensitivity of 1.0 fg/mL. Importantly, the unique biochip was selective against blood-borne antigens and standby for 10 days at 5 °C. Our developed DIDC-based SARS-CoV-2 biosensor is suitable for point-of-care (POC) diagnostic applications due to portability and scaling-up ability. In addition, this sensing platform can be modified for the early diagnosis of severe viral infections using real samples.

COVID-19 , SARS-CoV-2 , Graphite , Humans , Reproducibility of Results , Silicon Dioxide , Spike Glycoprotein, Coronavirus