نتایج جستجو برای: air swabs
تعداد نتایج: 213224 فیلتر نتایج به سال:
It has long been recognized that bacteria fail to survive for long periods on cotton swabs. Unsaturated fatty acids have been shown to inhibit a number of species (Pollock, Brit. J. Exptl. Pathol. 28:295, 1947; Rowatt, J. Gen. Microbiol. 17:279, 1957), and the presence of these substances in cotton has been demonstrated (Pollock, Nature 161:853, 1948). Various attempts have been made to overcom...
Urethral and endocervical swabs and self-collected vaginal swabs (SCVSs) and urine specimens are all used as samples for diagnosis of urogenital infection with Chlamydia trachomatis. We have now determined chlamydial organism load in matched specimens from different anatomic sites and examined its relation to clinical signs and symptoms in men and women. Organism load was measured with assays b...
In patients with cystic fibrosis who do not produce sputum, deep throat swabs are cultured for potential respiratory pathogens. Usually these swabs are directly streaked onto selective agar media. In a study of 50 pediatric cystic fibrosis patients, we compared this traditional method using rayon swabs with two methods having quantitative modifications: calcium alginate swabs eluted in Ringer's...
The survival of group B streptococci on a variety of swabs, held either in their containers or in transport media for periods of up to 48 hours, at room temperature and at 4 degrees C, has been assessed. Results indicated that holding swabs in transport media did not favour prolonged survival of the streptococci and that the yield of organisms was much greater from swabs held in their ordinary ...
Patients whose gastrointestinal tracts are colonized with vancomycin-resistant enterococci (VRE) may serve as a reservoir for nosocomial transmission. We compared the sensitivities and concordance of several methods used to detect VRE colonization. Eighty-two paired rectal and perirectal swabs were obtained from 13 patients over a 9-day period. The sensitivity of both rectal and perirectal swab...
Ten commercial transport swabs were evaluated for their ability to preserve bacteria for 24 and 48 hours. Microorganisms included ATCC strains of Gram-positive and Gram-negative aerobes and anaerobes. There was a wide variation in performance. Swabs using Amies plus charcoal medium or Stuart's medium had better recovery rates than those using Amies medium alone. The nature of the tips of the sw...
We evaluated the added value of collecting both nasal and oropharyngeal swabs, compared with collection of nasal swabs alone, for detection of common respiratory viruses by reverse transcription-polymerase chain reaction in hospitalized children aged <10 years. Nasal swabs had equal or greater sensitivity than oropharyngeal swabs for detection of respiratory syncytial virus, adenovirus, human m...
Indicator cotton swabs have been developed in order to enable faster, less expensive, and simpler information gathering of a wound status. Swabs are normally used for cleaning the wound, but here, they were covalently functionalized with indicator chemistry. Thus, they in principle enable simultaneous wound cleaning and wound pH detection. Using an indicator dye with a color change from yellow ...
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