Pre-adolescent children exhibit lower aerosol particle volume emissions than adults for breathing, speaking, singing and shouting.

Speaking and singing are activities linked to increased aerosol particle emissions from the respiratory system, dependent on the utilized vocal intensity. As a result, these activities have experienced considerable restrictions in enclosed spaces since the onset of the COVID-19 pandemic due to the risk of infection from the SARS-CoV-2 virus, transmitted by virus-carrying aerosols. These constraints have affected public education and extracurricular activities for children as well, from in-person music instruction to children's choirs. However, existing risk assessments for children have been based on emission measurements of adults. To address this, we measured the particle emission rates of 15 pre-adolescent children, all eight to ten years old, with a laser particle counter for the test conditions: breathing at rest, speaking, singing and shouting. Compared with values taken from 15 adults, emission rates for breathing, speaking and singing were significantly lower for children. Particle emission rates were reduced by a factor of 4.3 across all conditions, whereas emitted particle volume rates were reduced by a factor of 4.8. These data can supplement SARS-CoV-2 risk management scenarios for various school and extracurricular settings.

Treating epistaxis - who cares for a bleeding nose? A secondary data analysis of primary and secondary care.

BACKGROUND: The primary objective was to describe outpatient treatment of epistaxis among different physicians based on a large patient population over a period of 10 years. The secondary objective was to evaluate the value of the practice fee as an instrument of allocation in patients with epistaxis. METHODS: Anonymized statutory health insurance data (AOK Lower Saxony) of patients with a diagnosis of epistaxis treated between 2007 and 2016 were examined. Demographic data, accompanying diagnoses, medication and involved medical groups (general practitioners (GP), pediatricians, ear, nose and throat (ENT) specialists or other) were analyzed. Furthermore, we assessed whether the use of specialist groups changed after abolition of the practice fee in 2013. RESULTS: Epistaxis was responsible for 302,782 cases (160,963 patients). The distribution of cases was slightly in favor of ENT specialists vs. GP (119,170 vs. 110,352). The cases seen by GP and ENT specialists were comparable with regard to age and sex distribution. Hypertension, atrial fibrillation/flutter and an antithrombotic therapy were slightly more common among cases consulting a GP. The GP recorded more co-diagnoses than the ENT. The use of outpatient care and the proportions of the involved physicians scarcely fluctuated during the study period. Overall, 23,118 patients (14.4%) were diagnosed by both, GP and ENT during a relatively short time period. The practice fee remuneration had no impact on the consultation of the physician groups. CONCLUSION: The outpatient treatment of epistaxis constitutes a considerable medical and economic burden in Germany. Strengthening the primary medical sector (GP-centered care) is necessary to reach the goal of initially directing patients to primary care, providing specialists more time for severe cases and reducing the impact on public health balance sheets.