In some diseases, due to the restrictive availability of vaccines on the market (e.g., during the early emergence of a new disease that may cause a pandemic such as COVID-19), the use of plasma transfusion is among the available options for handling such a disease. In this study, we developed an SEIR mathematical model of disease transmission dynamics, considering the use of convalescent plasma transfusion (CPT). In this model, we assumed that the effect of CPT increases patient survival or, equivalently, leads to a reduction in the length of stay during an infectious period. We attempted to answer the question of what the effects are of different rates of CPT applications in decreasing the number of infectives at the population level. Herein, we analyzed the model using standard procedures in mathematical epidemiology, i.e., finding the trivial and non-trivial equilibrium points of the system including their stability and their relation to basic and effective reproduction numbers. We showed that, in general, the effects of the application of CPT resulted in a lower peak of infection cases and other epidemiological measures. As a consequence, in the presence of CPT, lowering the height of an infective peak can be regarded as an increase in the number of remaining healthy individuals; thus, the use of CPT may decrease the burden of COVID-19 transmission.

This research aims to analyze the performance of employees at the Palang Merah Indonesia in Bandung. This study uses compensation and good corporate governance variables to analyze employee performance using work motivation as an intervening variable. The population in this study were all employees of the Palang Merah Indonesia in Bandung by using a minimum sample of 110 employees after being calculated using the slovin technique with simple random sampling. Data collection methods in the study used primary and secondary data, explanatory surveys, and questionnaires. Data analysis technique in this study uses regression analysis. The purpose of this study was to analyze the direct effect of compensation and good corporate governance on employee performance through motivation as an intervening variable. The results showed that the motivation and compensation variables had a significant positive influence on good corporate governance. Furthermore, the variable good corporate governance shows significant positive results on employee performance.