scholarly journals Potential application of novel technology developed for instant decontamination of personal protective equipment before the doffing step

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0250854
Author(s):  
Luís Alberto Brêda Mascarenhas ◽  
Bruna Aparecida Souza Machado ◽  
Leticia de Alencar Pereira Rodrigues ◽  
Katharine Valéria Saraiva Hodel ◽  
Alex Álisson Bandeira Santos ◽  
...  

The use of personal protective equipment (PPE) has been considered the most effective way to avoid the contamination of healthcare workers by different microorganisms, including SARS-CoV-2. A spray disinfection technology (chamber) was developed, and its efficacy in instant decontamination of previously contaminated surfaces was evaluated in two exposure times. Seven test microorganisms were prepared and inoculated on the surface of seven types of PPE (respirator mask, face shield, shoe, glove, cap, safety glasses and lab coat). The tests were performed on previously contaminated PPE using a manikin with a motion device for exposure to the chamber with biocidal agent (sodium hypochlorite) for 10 and 30s. In 96.93% of the experimental conditions analyzed, the percentage reduction was >99% (the number of viable cells found on the surface ranged from 4.3x106 to <10 CFU/mL). The samples of E. faecalis collected from the glove showed the lowest percentages reduction, with 86.000 and 86.500% for exposure times of 10 and 30 s, respectively. The log10 reduction values varied between 0.85 log10 (E. faecalis at 30 s in glove surface) and 9.69 log10 (E. coli at 10 and 30 s in lab coat surface). In general, E. coli, S. aureus, C. freundii, P. mirabilis, C. albicans and C. parapsilosis showed susceptibility to the biocidal agent under the tested conditions, with >99% reduction after 10 and 30s, while E. faecalis and P. aeruginosa showed a lower susceptibility. The 30s exposure time was more effective for the inactivation of the tested microorganisms. The results show that the spray disinfection technology has the potential for instant decontamination of PPE, which can contribute to an additional barrier for infection control of healthcare workers in the hospital environment.

2021 ◽  
Vol 4 (2) ◽  
pp. 86-96
Author(s):  
Omobola Ojo ◽  
Adeyinka Adeniran ◽  
Olayinka Goodman ◽  
Bisola Adebayo ◽  
Esther Oluwole ◽  
...  

Background: Laboratory healthcare workers do handle a wide range of potentially dangerous materials which exposes them to numerous hazards. This study aimed to assess the practices of laboratory health care workers towards safety, infection control and the associated factors to its practices. Case Presentation: A cross-sectional study was conducted among 181 laboratory healthcare workers in all registered 33 laboratory facilities in Ikeja Local Government Area in 2017. Data were collected with pre-tested, structured self-administered questionnaires. Data analysed with SPSS version 20 and p-value of < 0.05. The mean age of respondents was 35.0 ± 2.45 years, most of whom were females (57.7%) and married (61.1%). The majority (98.9%) demonstrated good knowledge of infection control. A total of 62.3% identified hand washing as the most important infection control practice while HIV and Tuberculosis were diseases respondents majorly considered as high risk of contracting. A total of 84.6% of the respondents showed good practices. Limited availability of personal protective equipment in the laboratories was a major barrier identified by 98.1% of respondents. Respondents displayed good knowledge, attitude and practice of infection control. Discussion and Conclusion: Barrier to infection control was the limited availability of personal protective equipment. Therefore, concerted efforts should be mustered to ensure continuous training and retraining with the provision of personal protective equipment.        


2020 ◽  
Vol 30 (6) ◽  
Author(s):  
Bassel Tarakji ◽  
Mohammad Zakaria Nassani ◽  
Faisal Mehsen Alali ◽  
Abdulwahab A. Abuderman

BACKGROUND፡ Coronavirus disease 2019 is an infectious disease caused by severe acute respiratory syndrome coronavirus 2. This study aimed to address the preventive procedures to protect healthcare workers at hospital to avoid COVID-19, and infection control procedures to protect dental professionals in dental office.METHODS: We conducted a search of published articles from PubMed, google scholar databases using key words such as COVID-19, healthcare worker, infection control, and dental practice. Relevant articles were identified and reviewed. Most published papers were clinical reports and case studies. We have selected some of the current published papers written in English in 2020.RESULTS: Infection control procedures to protect health workers at hospitals, and dental professionals at dental office were summurised and presented. Infection control procedures for healthcare workers at hospitals include Personal protective equipment, Korea filter (KF)94 respirator, goggles, face protector,disposable waterproof long-arm gown, and gloves, and others. Extra-protection procedures should be taken with old and vulnerable healthcare workers. Dental professionals should evaluate patients in advance before starting dental treatment. Aerosols generating procedures should be avoided and personal protective equipment should be used. Dental treatment should be restricted to emergency cases only.CONCLUSION: Old medical staff should be in safer distance to avoid infection, but young physicians and nurses should work at frontline as their immunity is better than their colleagues at old age. Screening patients and measurement of the body temperature are essential measures before dental treatment.


Author(s):  
Ahmed Fouad Bogari ◽  
Nada Mohmmad Alharbi ◽  
Mohammed Abdulrahman Alaqlan ◽  
Turki Salem Aljaza ◽  
Ali Ibrahim Alibrahim ◽  
...  

The COVID-19 pandemic has forced many countries to pose an emergency to contain the contamination and prevent the further spread of the infection. In this context, many societies and research papers were published to optimize guidelines and protocols for patients undergoing surgery and subsequent intubation. Accordingly, infection control is a critical approach to reduce the rate of contamination and risk of catching infections for suspected and confirmed COVID-19 patients. As a result, various guidelines were discussed in the current literature review, including guidelines to the patient, healthcare workers, operating room, anesthesia equipment, and patient transportation. For instance, healthcare workers can protect themselves from catching infections by wearing personal protective equipment and conducting adequate disinfection measures following each operation, in addition to the proper disposal of the contaminated objects. Strictly following these protocols should be done to reduce the risk of contamination in the operating room and enhance the outcomes of the patients and healthcare workers.


Author(s):  
Nasia Safdar ◽  
Gage K. Moreno ◽  
Katarina M. Braun ◽  
Thomas C. Friedrich ◽  
David H. O’Connor

BackgroundHealthcare workers (HCWs) are at the frontlines of the COVID-19 pandemic and are at risk of exposure to SARS-CoV-2 infection from their interactions with patients and in the community (1, 2). Limited availability of recommended personal protective equipment (PPE), in particular N95 respirators, has fueled concerns about whether HCWs are adequately protected from exposure while caring for patients. Understanding the source of SARS-CoV-2 infection in a HCW – the community or the healthcare system – is critical for understanding the effectiveness of hospital infection control and PPE practices. In Dane County, Wisconsin, community prevalence of SARS-CoV-2 is relatively low (cumulative prevalence of ~0.06% – positive cases / total population in Dane county as of April 17). Although SARS-CoV-2 infections in HCWs are often presumed to be acquired during the course of patient care, there are few reports unambiguously identifying the source of acquisition.ObjectiveTo determine the source of transmission of SARS-CoV-2 in a healthcare worker.


2021 ◽  
Vol 8 (2) ◽  
pp. 101-105
Author(s):  
Alshahrani et al. ◽  

The aim of this study was to assess the perception of healthcare workers regarding self-protection during the COVID-19 pandemic in Saudi Arabia. The novel COVID-19 pandemic has completely changed the dynamic of governments, social lives, global economy, and health care systems priorities. Healthcare workers (HCWs) are one of the most group of people at risk of acquiring the infection, especially those who are taking care of COVID-19 patients. This cross-sectional survey-based study was conducted among HCWs during the period between May to July 2020 in Saudi Arabia. More than 70% of participating HCWs were able to access the personal safety policies and procedures in the workplace and COVID-19 treatment algorithm. In addition, the presence of an infection control team was also present in most of the institutes. The most common accessible personal protective equipment was hand gel sanitizer (89.9%), followed by disposable gloves (82.5%) and disposable masks (78.9%). More than 75% of participants reported that their institute has a special infection control team during the COVID-19 pandemic. Most of the respondents (~75%) believe that their institute would take all necessary measurements to protect their personal integrity at work. Several precautionary measures were undertaken appropriately by the Saudi Government to overcome the COVID-19 immediate and futuristic consequences. Personal protective equipment and protective measures would be crucial for public health if implemented appropriately during highly spreading infections (e.g., COVID-19) to minimize the transmission and preserve health


Author(s):  
Naomi C A Whyler ◽  
Norelle L Sherry ◽  
Courtney R Lane ◽  
Torsten Seemann ◽  
Patiyan Andersson ◽  
...  

Abstract Healthcare workers are at increased risk of occupational transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We report 2 instances of healthcare workers contracting SARS-CoV-2 despite no known breach of personal protective equipment. Additional specific equipment cleaning was initiated. Viral genomic sequencing supported this transmission hypothesis and our subsequent response.


2006 ◽  
Vol 27 (5) ◽  
pp. 473-478 ◽  
Author(s):  
Marianna Ofner-Agostini ◽  
Denise Gravel ◽  
L. Clifford McDonald ◽  
Marcus Lem ◽  
Shelley Sarwal ◽  
...  

Objective.To review the severe acute respiratory syndrome (SARS) infection control practices, the types of exposure to patients with SARS, and the activities associated with treatment of such patients among healthcare workers (HCWs) who developed SARS in Toronto, Canada, after SARS-specific infection control precautions had been implemented.Methods.A retrospective review of work logs and patient assignments, detailed review of medical records of patients with SARS, and comprehensive telephone-based interviews of HCWs who met the case definition for SARS after implementation of infection control precautions.Results.Seventeen HCWs from 6 hospitals developed disease that met the case definition for SARS after implementation of infection control precautions. These HCWs had a mean age ( ± SD) of 39 ± 2.3 years. Two HCWs were not interviewed because of illness. Of the remaining 15, only 9 (60%) reported that they had received formal infection control training. Thirteen HCWs (87%) were unsure of proper order in which personal protective equipment should be donned and doffed. Six HCWs (40%) reused items (eg, stethoscopes, goggles, and cleaning equipment) elsewhere on the ward after initial use in a room in which a patient with SARS was staying. Use of masks, gowns, gloves, and eyewear was inconsistent among HCWs. Eight (54%) reported that they were aware of a breach in infection control precautions. HCWs reported fatigue due to an increase number and length of shifts; participants worked a median of 10 shifts during the 10 days before onset of symptoms. Seven HCWs were involved in the intubation of a patient with SARS. One HCW died, and the remaining 16 recovered.Conclusion.Multiple factors were likely responsible for SARS in these HCWs, including the performance of high-risk patient care procedures, inconsistent use of personal protective equipment, fatigue, and lack of adequate infection control training.


Author(s):  
Nhan Phuc Thanh Nguyen ◽  
Duong Dinh Le ◽  
Robert Colebunders ◽  
Joseph Nelson Siewe Fodjo ◽  
Trung Dinh Tran ◽  
...  

Frontline healthcare workers (HCWs) involved in the COVID-19 response have a higher risk of experiencing psychosocial distress amidst the pandemic. Between July and September 2020, a second wave of the COVID-19 pandemic appeared in Vietnam with Da Nang city being the epicenter. During the outbreak, HCWs were quarantined within the health facilities in a bid to limit the spread of COVID-19 to their respective communities. Using the stress component of the 21-item Depression, Anxiety and Stress Scale (DASS-21), we assessed the level of stress among HCWs in Da Nang city. Between 30 August and 15 September 2020, 746 frontline HCWs were recruited to fill in an online structured questionnaire. Overall, 44.6% of participants experienced increased stress and 18.9% severe or extremely severe stress. In multivariable analysis, increased stress was associated with longer working hours (OR = 1.012; 95% CI: 1.004–1.019), working in health facilities providing COVID-19 treatment (OR = 1.58, 95% CI: 1.04–2.39), having direct contact with patients or their bio-samples (physicians, nurses and laboratory workers; OR = 1.42, 95% CI: 1.02–1.99), low confidence in the available personal protective equipment (OR = 0.846; 95% CI: 0.744–0.962) and low knowledge on COVID-19 prevention and treatment (OR = 0.853; 95% CI: 0.739–0.986). In conclusion, many frontline HCWs experienced increased stress during the COVID-19 outbreak in Da Nang city. Reducing working time, providing essential personal protective equipment and enhancing the knowledge on COVID-19 will help to reduce this stress. Moreover, extra support is needed for HCWs who are directly exposed to COVID-19 patients.


2020 ◽  
pp. 153537022097781
Author(s):  
Douglas J Perkins ◽  
Robert A Nofchissey ◽  
Chunyan Ye ◽  
Nathan Donart ◽  
Alison Kell ◽  
...  

The ongoing pandemic of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has placed a substantial strain on the supply of personal protective equipment, particularly the availability of N95 respirators for frontline healthcare personnel. These shortages have led to the creation of protocols to disinfect and reuse potentially contaminated personal protective equipment. A simple and inexpensive decontamination procedure that does not rely on the use of consumable supplies is dry heat incubation. Although reprocessing with this method has been shown to maintain the integrity of N95 respirators after multiple decontamination procedures, information on the ability of dry heat incubation to inactivate SARS-CoV-2 is largely unreported. Here, we show that dry heat incubation does not consistently inactivate SARS-CoV-2-contaminated N95 respirators, and that variation in experimental conditions can dramatically affect viability of the virus. Furthermore, we show that SARS-CoV-2 can survive on N95 respirators that remain at room temperature for at least five days. Collectively, our findings demonstrate that dry heat incubation procedures and ambient temperature for five days are not viable methods for inactivating SARS-CoV-2 on N95 respirators for potential reuse. We recommend that decontamination procedures being considered for the reuse of N95 respirators be validated at each individual site and that validation of the process must be thoroughly conducted using a defined protocol.


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