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1.
Pakistan Armed Forces Medical Journal ; 72(1):91-96, 2022.
Article in English | Scopus | ID: covidwho-1841856

ABSTRACT

Objective: To share the epidemiological, clinical and laboratory -based evidence of severe acute respiratory syndrome Corona Virus-2 with focus on the cases of re-infection;an update after one year of the ongoing pandemic. Study Design: Prospective observational study. Place and Duration of Study: Department of Pathology, in collaboration with Department of Medicine, Combined Military Hospital, Malir, from Mar 2020 to Feb 2021. Methodology: Total 5190 nasopharyngeal swabs were collected and transported to the laboratory in viral transport media for severe acute respiratory syndrome Corona Virus-2, from all symptomatic patients with a history of exposure/traveling from endemic areas and those requiring admission in hospital and were screened for COVID-19 as per hospital standing protocols. Results: 561(10.8%) patients were PCR positive for severe acute respiratory syndrome Corona Virus-2. The mean age of patients was 39.45±31.9 years and a majority of patients were males 426 (76%). The most common symptoms were fever and dry cough followed by myalgia and shortness of breath. 37 (9%) patients died due to the severity of the illness. Total 6 (1.46%) cases of laboratory-confirmed reinfection of severe acute respiratory syndrome Corona Virus-2 were reported. 2(33%) cases of reinfection were observed in health care workers, mortality was seen in a single patient associated with old age and comorbidities. Conclusion: In our study, the severity of the disease was directly related to the age of patients and underlying comorbidities. Reinfection was associated with increased viral load and exposure to the infected environment. © 2022, Army Medical College. All rights reserved.

2.
International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) ; : 67-68, 2021.
Article in English | Web of Science | ID: covidwho-1557353

ABSTRACT

The AlGaN-based deep ultraviolet lightemitting diodes (DUV LEDs) for the disinfection of SARS-2 (Covid-19) are proposed in this study. The optoelectronic characteristics of DUV LEDs are numerically analyzed. The results show that the internal quantum efficiency (IQE) and radiative recombination rate are excellently improved in the proposed LED. This significant enhancement is due to the optimal recombination of electron- hole pairs in the active region. This is attributed to the increase of potential barrier height for electron, which suppress the electron leakage effectively. Moreover, due to the decrease of lattice mismatch between the last quantum barrier (LQB) and EBL ease the holes transportation to the active region. Therefore, based on these results, we highly believe that this study provides a novel approach for highly efficient DUV LEDs (222 nm) for the disinfection of severe SARS-2 (Covid-19) infection.

3.
2021 International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2021 ; 2021-September:67-68, 2021.
Article in English | Scopus | ID: covidwho-1470352

ABSTRACT

The AlGaN-based deep ultraviolet lightemitting diodes (DUV LEDs) for the disinfection of SARS-2 (Covid-19) are proposed in this study. The optoelectronic characteristics of DUV LEDs are numerically analyzed. The results show that the internal quantum efficiency (IQE) and radiative recombination rate are excellently improved in the proposed LED. This significant enhancement is due to the optimal recombination of electron-hole pairs in the active region. This is attributed to the increase of potential barrier height for electron, which suppress the electron leakage effectively. Moreover, due to the decrease of lattice mismatch between the last quantum barrier (LQB) and EBL ease the holes transportation to the active region. Therefore, based on these results, we highly believe that this study provides a novel approach for highly efficient DUV LEDs (222 nm) for the disinfection of severe SARS-2 (Covid-19) infection. © 2021 IEEE.

4.
J Hosp Infect ; 118: 87-95, 2021 Dec.
Article in English | MEDLINE | ID: covidwho-1464781

ABSTRACT

BACKGROUND: Healthcare professionals should consider environmental sustainability when using personal protective equipment (PPE). One of the most frequently used items of PPE in medical settings are gloves. AIM: This study aims to quantify the environmental impact of sterile versus non-sterile gloves using the life cycle assessment (LCA) methodology. METHODS: This study used three glove types: non-sterile gloves and sterile gloves (latex and latex-free). Sixteen different environmental impact categories were used to demonstrate the impact of each glove type. FINDINGS: Non-sterile gloves had the least environmental impact in all categories. The two types of sterile gloves, non-latex (synthetic rubber) and latex (natural rubber), performed similarly, although the non-latex gloves had a greater impact on ozone depletion, mineral use and ionizing radiation. For climate change impact, sterile latex gloves were 11.6 times higher than non-sterile gloves. This study found that for both sterile type gloves (latex and non-latex), the manufacture of the gloves contributes to the most considerable environmental impact, with an average of 64.37% for sterile latex gloves and 60.48% for non-latex sterile gloves. CONCLUSION: Using the LCA methodology, this study quantitatively demonstrated the environmental impact of sterile versus non-sterile gloves.


Subject(s)
Gloves, Surgical , Latex , Gloves, Protective , Humans
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