Analyzing the virality of dietary supplement on Facebook using SEIR Model

Facebook's usage has increased to the point that it had become a crucial marketing tool for businesses. With the growth of online marketing, it was essential for sellers to understand the viral marketing ideas that complemented their products. In this study, the Susceptible Exposed Infected Recovered (SEIR) model was used to assess the virality of nutritional supplements on Facebook. The model considered variables including the total number of followers, users who saw and shared the post, followers who reached the post, and people who followed the marketing page but did not view or share the content. From 15 May 2022 to 19 June 2022, information was gathered from Rabella's "Rabella Kota Bharu" Facebook account. The account administrator regularly used two post kinds, namely Photos and Videos, to improve user interaction. The analysis of the most popular posts of each genre showed that Photos had the largest reproduction number on June 6, 2022, which also happened to be a public holiday honoring the Yang di-Pertuan Agong's birthday. This study was essential for marketers who wanted to learn how users responded to various post formats and make content more accessible to customers.