As a typical case of the optimal planning for the provision of restricted medical resources. widespread vaccination is considered an effective and sustainable way to prevent and control large-scale novel coronavirus disease 2019 (COVID-19) outbreaks. However. an initial supply shortage of vaccines is inevitable because of the narrow production and logistical capacity. https://www.roneverhart.com/Mabis-Dmi-Healthcare-3-In-1-All-Purpose-Commode-by-Briggs-Healthcare/