This nurse is well protected against occupational hazards: she is using a...
This nurse is well protected against occupational hazards: she is using a laminar flow cabinet, wearing gown, gloves, goggles and long sleeves

Protective equipment

COVID-19 prevention: Why adequate PPE and training are so important

Despite being at high risk of exposure to COVID-19, frontline healthcare professionals who were appropriately protected did not contract infection or develop protective immunity against the virus, finds a study from China published by The BMJ.

The researchers acknowledge that the healthcare professionals were working away from home, so had limited social interactions after work, which probably contributed to the absence of infection. But they say this does not affect their conclusion that appropriate personal protective equipment (PPE) is effective in preventing infection in healthcare professionals who work in highly exposed environments. As such, they say healthcare systems “must give priority to the procurement and distribution of personal protective equipment, and provide adequate training to healthcare professionals in its use.”

The study published in The BMJ can be found here.

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COVID-19 infection among healthcare professionals was very common in Wuhan and in other countries in the early phase of the outbreak, and inappropriate PPE is believed to be a major factor in infection among healthcare professionals. However, the pattern of infection and immune response of healthcare professionals with high exposure to COVID-19 is not known. So a team of researchers from Sun Yat-sen University, China and University of Birmingham, UK, set out to examine the protective effects of appropriate PPE for frontline healthcare professionals who provided care for patients with COVID-19.

Their findings are based on 420 healthcare professionals (116 doctors and 304 nurses) with an average age of 36 years, who were deployed to Wuhan for 6-8 weeks from 24 January to 7 April 2020 to care for patients with COVID-19. Participants worked 4-6 hour shifts for an average of 5.4 days a week, and an average of 16.2 hours each week in intensive care units. All participants were provided with appropriate PPE, including protective suits, masks, gloves, goggles, face shields, and gowns. They also received training in the correct use of PPE and in reducing their exposure to infection when caring for patients. During the deployment period in Wuhan, none of the study participants reported COVID-19 related symptoms. When the participants returned home, they all tested negative for COVID-19 infection or its antibodies.

Before a safe and effective vaccine becomes available, healthcare professionals remain susceptible to COVID-19

Liu et al.

The researchers point out that this study does not address the question of what the minimal level of PPE should be to effectively prevent infection among healthcare professionals, and say the findings only apply to frontline clinical staff. And they acknowledge that these healthcare professionals were working away from home, which probably contributed to the absence of infection. “However, this limitation does not affect our conclusion that appropriate PPE is effective in preventing infection in healthcare professionals who work in highly exposed environments,” they write. “Before a safe and effective vaccine becomes available, healthcare professionals remain susceptible to COVID-19,” they add. “Healthcare systems must give priority to the procurement and distribution of PPE, and provide adequate training to healthcare professionals in its use.”


Source: the BMJ

11.06.2020

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