The Effect of Water Resistance Therapy on the Impulse Dispersion of Aerosols During Sustained Phonation.

Introduction: Group singing has been associated with higher transmission risks via exhaled and spread aerosols in the CoVID19 pandemic. For this reason, many musical activities, such as rehearsals and lessons, but also voice therapy sessions, have been restricted in many countries. Consequently, transmission risks and pathways have been studied, such as aerosol amounts generated by exhalation tasks, convectional flows in rooms, or the impulse dispersion of different kinds of phonation.

[Laryngeal cysts in children].

Unlabelled: Laryngeal cysts in children are relatively rare, occupying the 4-5th place in the structure of congenital malformations. The paper presents the combined experience of two Russian pediatric otorhinolaryngological clinics traditionally involved in the rehabilitation of patients with congenital and acquired pathology of the larynx.

Objective: To analyze the features of the clinic, diagnosis and treatment of laryngeal cysts in children.

Effects of surgical masks on aerosol dispersion in professional singing.

Background: In the CoVID-19 pandemic, singing came into focus as a high-risk activity for the infection with airborne viruses and was therefore forbidden by many governmental administrations.

Objective: The aim of this study is to investigate the effectiveness of surgical masks regarding the spatial and temporal dispersion of aerosol and droplets during professional singing.

Methods: Ten professional singers performed a passage of the Ludwig van Beethoven's "Ode of Joy" in two experimental setups-each with and without surgical masks.

The Effect of Singers' Masks on the Impulse Dispersion of Aerosols During Singing.

Background: During the Covid-19 pandemic, singing activities were restricted due to several super-spreading events that have been observed during rehearsals and vocal performances. However, it has not been clarified how the aerosol dispersion, which has been assumed to be the leading transmission factor, could be reduced by masks which are specially designed for singers.

Material And Methods: Twelve professional singers (10 of the Bavarian Radio-Chorus and two freelancers, seven females and five males) were asked to sing the melody of the ode of joy of Beethoven's 9th symphony "Freude schöner Götterfunken, Tochter aus Elisium" in D-major without masks and afterwards with five different singers' masks, all distinctive in their material and proportions.