Surgical masks offer limited protection
نویسندگان
چکیده
منابع مشابه
Evaluation of respiratory protection of contagion masks.
There are several types of contagiotn or surgical masks commonly used by physicians, nurses, and biological laboratory personnel to minimize the hazard of the trainsmission of airborne pathogenic microorganisms. As part of a study in which the respiratory protection afforded by various commercially available masks and respirators was evaluated, three represenitative types of contagion masks wer...
متن کاملInfluenza H1N1pdm-specific maternal antibodies offer limited protection against wild-type virus replication and influence influenza vaccination in ferrets
OBJECTIVE The objective was to study passively acquired influenza H1N1 pandemic (H1N1pdm) maternal antibody kinetics and its impact on subsequent influenza infection and vaccination in ferrets during an outbreak of the H1N1pdm. DESIGN AND MAIN OUTCOME MEASURES Infectivity of the H1N1pdm in the respiratory tract of ferrets was compared with the previous seasonal A/South Dakota/6/2007 (SD07, H1...
متن کاملRespiratory protection provided by five new contagion masks.
The effectiveness of five recently developed contagion masks in filtering air-borne particles (1 to 5 mu diam) has been reported. One mask, available in four sizes, was 99% efficient. This mask can be reused after sterilization. The other four masks are available in only one size and are intended to be used one time only. Two of these four disposable types were more than 90% efficient but the v...
متن کاملParticle Size-Selective Assessment of Protection of European Standard FFP Respirators and Surgical Masks against Particles-Tested with Human Subjects
This study was conducted to investigate the protection of disposable filtering half-facepiece respirators of different grades against particles between 0.093 and 1.61 μm. A personal sampling system was used to particle size-selectively assess the protection of respirators. The results show that about 10.9% of FFP2 respirators and 28.2% of FFP3 respirators demonstrate assigned protection factor...
متن کاملEnzyme Inhibitor May Offer Dual Protection against Brain Disease
Chromosomes are extraordinarily long, wiggly strands, making up more than two meters of DNA in each human cell, and given the 50 trillion or so cells in the human body, we have enough DNA in each of us to go from here to the sun and back more than 300 times. To wrangle chromosomes into nuclei only ten to 20 microns wide, these molecules are wound tightly around proteins known as histones, compa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Weekly releases (1997–2007)
سال: 1999
ISSN: 9999-1233
DOI: 10.2807/esw.03.31.01360-en