A lot depends on the quality of material used for the face mask. Problems could also arise from not wearing the mask properly (correctly). Whatever the case, most masks are not 100% safe. But then, nothing is really.

There are lots of issues other than face mask. Individual, institutional factors are there too. Duration and frequency of exposure and severity of cases are involved also.

Thank you Maurice Ekpenyong and Muhammed Ashraful Alam for your answers. Health professionals contamination is a serious problem and need to be studied.

Hope so and it's urgent too.

Thank you Terri Purvis

There r many reasons for that

But face mask is precaution not the cure

Yes Yogesh Technomania , face musk are precaution, some of them could not work correctly.

I agree with Muhammed Ashraful Alam

Thank you Terri Purvis

Use of Face mask is not the only protective gadgets for healthcare professionals. Even the facemask has variety and some are at risk of contamination than others.

In the hospital or clinical settings too, there are several points of contact with patients and instruments that can predispose the physicians or health professionals to Hospital acquired infections, one of such is COVID-19.

Therefore the reason for the scenario mentioned in the question. Thanks

Thank you Bamidele Johnson Alegbeleye for your replay.

I think face musk is more a psychological satisfaction than protection.

Moreover, no study say it protect you 100 % But it does to some extent.

Thank you Md. Mohayminul Islam for your replay

July 26, 2020: After due consideration, to your question:

1. Face masks are not perfect.

2. The possibility of leakage and contamination increase with time (e.g. a 12 hour shift too long for one mask)

3. There are breeches in protocol

4. There are other modes of transmission than just airborne-respiratory

5. Some of the cases may be contracted outside of work, e.g. home and play.

Stay safe and thank you for allowing these thoughts. Gary Ordog, MD

Thank you Gary Joseph Ordog for this add.

You are welcome. I still support the use of the face mask, as one part of a package of protection. If both parties are wearing N-95, think of if; that would reach statistical significance!

Face masks, being a safety device, can greatly lower the risk but not eliminate it; the most important variable is given by the behavior (respect of the procedures) as well as by the quality and typology of the masks.

Thank you Annunziata Mazzitelli for your reply.

Sometimes may be related to the severity of the virus

Thank you Sumayah Al-Mahmood for your reply.

Hi,

Actually, different issues could be there:

1. Quality of the mask and number of layers that and area of coverage

2. Each mask has an expiry date, hour-basis

3. Other infections from eyes and ears could happen

4. What we have heard by now, if an infected person with a mask being in a big room, after first few hours, even if all 4-5 other persons in a room wear a mask, they will all be infected.

So, lots of issues and considerations are there to take care of.

Regards,

Thank you Omid Mahdi Ebadati E. for your reply.