Detection of herpesviruses 1-6 and community-acquired respiratory viruses in patients with chronic rhinosinusitis with nasal polyposis.

Objective: To evaluate the prevalence of human herpesviruses (HHV) 1-6 and community-acquired respiratory viruses (CARVs) in specimens from patients with nasal polyposis undergoing functional endoscopic sinus surgery (FESS) and investigate the potential clinical role.

Methods: Viral occurrence was evaluated by molecular methods in polyp, turbinate mucosa, and pre- and postoperative scraping specimens from 35 consecutive patients at different time points in relation to FESS.

Results: Overall, 21 patients (60%) were positive to at least one virus in at least one specimen; in particular, 12.

Decrease of specific and total IgE levels in allergic patients after BCG vaccination: preliminary report.

Background: A systemic reaction to mycobacteria biases the balance of T helper cell types 1 and 2 toward T helper cell type 1. BCG vaccination mimics some characteristics of mycobacterial infection. Children who have undergone tuberculin conversion after BCG vaccination seem to be more likely to lose their atopic symptoms.