Three dimensions of bioburden (i.e., microbial load, microbial diversity, and the presence of likely pathogens) were measured at baseline using swab cultures obtained by Levine's technique.
The Cl signals were virtually indistinguishable in all cases from the baseline except after swabbing an unsoiled Talens PY3 yellow paint film with petroleum spirits.
At baseline 2 Buccal Swabs will be collected to use for deoxyribonucleic acid (DNA) extraction.
At baseline, nasopharyngeal flocked swabs and, if available, sputa were taken and stored in the local laboratory until transport to the central lab in Antwerp for nucleic acid (NA) extraction by the NucliSENS® EasyMag® (Biomériux).
Clinical and demographic data was collected at baseline along with throat swab and nasopharyngeal aspirate.
Saliva samples were collected using cotton wool swabs at baseline and 4 h after dosing.
Recruited subjects provided nasal and pharyngeal viral swabs at baseline and blood samples at baseline and 4 6 weeks postrecruitment and all were included in the final analysis, regardless of the collection of follow-up sera.
Patients came in for initial pre-dosing swab to establish baseline and to receive dyclonine.
Of these, 600 completed the baseline survey, provided a nasal swab and were randomized into the study.
From January 25 to 27, 2004, a nasal swab specimen and baseline serum sample were collected from healthcare workers at the hospital; each worker also completed a questionnaire.
The median time between last exposure and collection of the nasal swab and the baseline serum samples was 7 days (range 2 12 days).
