key: cord-0914605-85bixn27
authors: Rao US, V.; Arakeri, G.; Subash, A.; Thankur, S.
title: Droplet nuclei aerosol and Covid 19 - a risk to healthcare staff
date: 2020-05-03
journal: Br J Oral Maxillofac Surg
DOI: 10.1016/j.bjoms.2020.04.036
sha: fae384db42c31f72f4a00cc5a91b50e82b8e3796
doc_id: 914605
cord_uid: 85bixn27

nan

We read with great interest the editorial by Herron JBT et al 1 on the Personal protective equipment (PPE) and coronavirus disease 2019 . The authors need to be complimented for a well-timed paper that addresses the current issue of exposure of health care workers to COVID 19.

Authors mentioned that Flügge droplets travel up to 4.5 m, representing a risk to healthcare staff that is not directly involved in patient care. 1, 2 It is also noteworthy that the aerosols and droplets produced through speech has also been linked in person-to-person virus transmission. 3 Large droplets fall on to the ground, small droplets can dehydrate and remain as "droplet nuclei" in the air and behave like an aerosol. 3, 4 With the day-time temperature soaring, high-speed ceiling fans are being used in hospital wards. This can expand the spatial extent to which the emitted infectious particles can travel. Health care workers and employers who are not directly involved in patient care are also at risk of virus transmission due to this and need to take adequate precautions.

Furthermore, given the rising number of COVID 19 cases in India, different cadres of healthcare personnel are being inducted for screening and treatment delivery. Communitybased health workers are being deployed as the "interface between the community and the public health system". 5 As they deal with suspected cases, they are also prone to droplet nuclei aerosol exposure. Hence it is advised to educate them about the droplet nuclei aerosol risk and the use of N95 or FFP2 masks.

As rightly mentioned by the authors, the health care staff and the employee must receive adequate training to use personal protective equipment. There is a high chance that newly recruited or mobilised health care staff lack thorough knowledge of PPE usage. After gowning up, healthcare workers may get a sense of protection. This could be disastrous, as there is always a possibility that the health care staff may become a victim of human error making them vulnerable. This is a common scenario during the removal and disposing of PPE safely. Once the purpose is served, the users must take the utmost caution while disrobing and disposing of the PPE. Those at the forefront are busy and stressed with long shifts in sub-optimal conditions and fatigue is bound to set in. The staff may overlook the strict protocol of removal and disposal of PPE, thus defeating the entire purpose of wearing PPE.

Lastly, the availability of adequate PPE has been a key concern globally. In India, the certified kits should be made from 70 ± 5 GSM material, adhere to South India Textile Research Association (SITRA) guidelines, seam stitches and be hydrophobic. Avaricious elements have been manufacturing these at a premium without adhering to safety regulations.

Adequate training and education about droplet nuclei aerosol is very important for the safety of health care professionals and reducing risk of virus exposure. The training should be simple yet easy to reciprocate so that it can percolate across the spectrum of healthcare workers.

None.

Not applicable. 

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