COVID-19 is an extremely dangerous disease because of its highly infectious nature. In order to provide quick and immediate identification of infection, proper and immediate clinical support is needed. Researchers have proposed various machine learning and smart IoT-based schemes for categorizing COVID-19 patients. Artificial neural networks (ANNs), which are inspired by the biological concept of neurons, are generally used in various applications including healthcare systems. The ANN scheme provides a viable solution in the decision making process for managing healthcare information. The aim of this article is to provide secure COVID-19 vaccine distribution through IoT-based systems. The level-wise blockchain network is used to ensure security among IoT devices while distributing the vaccines. The proposed phenomenon is analyzed and verified over synthesized data where vaccine units are supplied by various distributors. The proposed approach is validated over accurate report generation and data alteration parameters against existing methods.