Latina Lista correspondent finds Mexican stores running low on surgical masks
By Mariana Llamas-Cendon
Latinalista.net
MEXICO CITY — Surgical masks and respirators have become a popular shield against the swine flu or H1N1 virus pandemic but they are not almighty. According to a story published on Esmas.com, the news website from Noticieros Televisa — one of the two main broadcasting companies in Mexico — experts at Mexico’s Autonomous National University (UNAM) said the masks prevent the transmission of swine flu by inhibiting the discharge of saliva drops when sneezing, coughing or even talking. Also, the masks help avoid direct contact between hands and mouth, which seems to be the most common form of infection with the H1N1 virus.

Mexican family sports surgical masks to ward off the H1N1 virus.
(Source: Esmas.com)
Surgical masks, although useful, also have a dark side. The most common type – one that usually comes in a blue color — offers protection for only about two to six hours, depending on the level of exposure to the virus.
“Masks should not be used longer than that (six hours) because they get moist and therefore, will not be able to protect as intended,” said Dr. Ricardo C. Armendariz, a renowned Mexican oncologist. “The virus (H1N1) is transmitted through microscopic particles known as fomite, which are present every time we breathe, and greater when we sneeze or cough.”
For Dr. Jaime Morales, vice director of the Department of Pulmonary Circulation in Latin America and a pneumologist for the National Institute of Medical Sciences and Nutrition Salvador Zubiran in Mexico City, a surgical mask has to be replaced every two hours, this being especially important for healthcare professionals.
“At the moment, due to the emergency situation that prevails, common surgical masks are being replaced every two hours; medium-efficiency ones that are not as thin, every eight hours, and the hard, rounded ones, every seven days,” Morales said.
Once replaced, masks are not reusable under any circumstances.
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