Articles related to Covid-19

No case for avoiding vaccination against COVID-19 based on alleged lack of vaccine efficacy

Widespread uptake of vaccination against SARS-CoV-2 infection is limited by a minority in the population who decline to be vaccinated.  The proportion varies between centres, and several reasons for non-vaccination exist or are stated.  These include social reasons, especially (in Australia) in remote indigenous communities; medical reasons in patients with impaired immunity and like diseases; distaste at administration of foreign compounds and other forms of disagreement with the principles of vaccination; and disbelief that in the case of COVID-19 the

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Healthcare worker safety of high-flow nasal oxygen and non-invasive ventilation use in COVID-19 patients: a systematic review and meta-analysis

INTRODUCTION High-flow nasal oxygen (HFNO) and non-invasive ventilation (NIV) may reduce the requirement for invasive ventilation in selected patients with respiratory failure.  However, there is concern that, when used in the treatment of coronavirus disease 2019 (COVID-19), both modalities may increase the risk of transmission to healthcare workers (HCW) through small droplet aerosol generation.  Small droplet aerosols have the potential to remain airborne for extended periods of time, follow air currents within the room, and penetrate deep into the airways,

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Modelling community spread of Covid-19 without complex mathematics

Sophisticated mathematical modeling of epidemic or pandemic spread of infections is based on differential equations containing exponential functions. The sophistication of these models is essential but they have a disadvantage of being difficult or impossible to be understood by readers unfamiliar with advanced mathematics. I have developed a spreadsheet model to estimate infection rates and mortality with Covid-19 as a function of time using only a few simple assumptions.

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