The case of the Omicron variant of COVID-19 is still the main case in Indonesia. On February 19, 2022, known daily cases reached 59.384, higher than last year’s peak of Delta’s daily cases of 56.757. However, the Ministry of Health stated that there was a decrease in daily confirmed cases of 10.900 on February 20 from the previous day, and active cases slowed slightly with the addition of 15.448 per day. Nevertheless, the government continues to make efforts to prevent the COVID-19 pandemic by increasing the complete vaccination program and booster doses. If someone has received the second dose within a minimum period of six months, it is strongly recommended to get a booster vaccination (Kemenkes, 2022). Several studies have shown that booster vaccines are considered to be more effective in preventing transmission of the Omicron variant of COVID-19 than the Delta variant (Omer and Malani, 2022).