As it solved the problem, I put it as an answer. Don't use single and double quotes, especially when you define a string with r in front of it.
Mar 2, 2020 This graphic from JAMA describes the purpose and proper use of medical masks for prevention of respiratory infection. Health-care workers
Apr 3, 2020 ' But, there are two kinds of face masks and they serve different purposes. Surgical Face Mask. The first kind is the surgical masks you can buy at
Jan 27, 2020 One-use masks. The World Health Organization recommends that all healthcare workers treating people with the virus wear these surgical masks
Mar 20, 2020 Rational use of face masks in the COVID-19 pandemic that face masks provide no effective protection against coronavirus infection. Surgical masks can prevent transmission of respiratory viruses from people who are ill.
Mar 27, 2020 People Are Sewing Face Masks for Medical Workers. we're specifically addressing the use of homemade face masks for healthcare workers. near as effective as N95 masks at protecting health workers from the viruses.
Mar 24, 2020 As the number of coronavirus cases continues to increase, you may be health conditions — might benefit from wearing a mask, if they use them correctly. Surgical masks cannot filter out virus particles, but they can protect
Apr 8, 2020 A medical professional rests at a drive-thru coronavirus testing site in The CDC now recommends everyone use cloth masks in public. The upshot: Masks can help stop the spread of coronavirus not just by protecting the