This study confirms that COVID-19-related stigma still exists even in the post-vaccination period. Nevertheless, a downward trend of the risk of stigmatization was found compared with previous research before vaccination. We analysed the tendency of stigmatization in two dimensions: prevalence and severity level. Although no major change concerning the prevalence of stigmatization was observed but the severity decreased significantly.
In this study, the prevalence of stigma experienced by patients who recovered from COVID-19 was 51.8%. In previous studies, the prevalence ranged from 29.4–84.5% in survivor-reported studies [4, 6, 25–27] and 45.9% − 64% in public-reported study [12, 24, 25]. Therefore, the value of 51.8% reported in this study still fell within the former range. However, various stigma measurement tools were used in these surveys.
In terms of the change in the stigmatization level, we analysed the tendency using three methods. First, we compared it with the study by Dar et al. [18], which used the original version of the questionnaire. The mean stigma score in Dar et al. was 28.5, whereas, in this study, the mean score was 24.6. Second, we compared our results with the study that classified stigma into levels. Among the survivor-reported studies, only the study by Wahyuhadi et al.4 presented the level of stigma. Wahyuhadi et al. found that 83.55% of the survivors experienced moderate-to-high stigmatization, whereas, only 19.9% reported moderate-to-high levels of stigma in this study, Third, the comparison was made to studies within Thailand. Since no other study has focused on recovered patients, we compared our results with a study conducted by Ruengorn et al. [14] which stated that the prevalence of moderate-to-high COVID-19 related public stigma was 75.8%. Accordingly, from these three means of comparison, less severity of stigmatization was observed.
This study also highlighted the presence of mental health problems related to COVID-19 stigmatization even in the post-vaccinated period. Our findings showed that stigma was related to stress, depression, and anxiety. This information was well aligned with previous knowledge regarding stigma and mental health [4, 7, 26]. Stigmatization usually peaked in the initial stage after patients’ return to the community [7] since stigmatized survivors often had to endure an extended period of home isolation, which resulted in a heightened sense of loneliness, discrimination or guilt [7].
Our results indicated that stigma decreased through time. Longer duration of admission and recovery were associated with a lower level of stigma. However, it did not disappear completely. Given that approximately 40% of the survey took place within 1 month after discharge, 50% of the participants experienced stigmatization; therefore, stigma existed beyond 1 month after recovery. This was possibly caused by the image of the infected individuals as having substandard hygiene and therefore were more likely to have re-infection and spread the disease [24]. Moreover, COVID-19 in the post-vaccination era remains a stigma because of the growing reports of Long COVID conditions, emergence of new variants, and breakthrough deaths of vaccinated people [6, 28, 29].
In this study, other factors that were associated with stigma included participants’ age, number of children, education, and income. The age of the survivors was inversely related the DC domain. The elder people are considered vulnerable, as they have a poorer prognosis, and higher rates of hospitalization and death [29]. Accordingly, they might not be willing to share their infection status among seniors in the community. Another factor was the number of children of the participants. The post-hoc analysis found that patients who have > 1 child tend to have higher stigma than childless ones. Children were also viewed as vulnerable because they lack immunization. During the survey, COVID-19 vaccination for children > 5 years old had just started [30]. Moreover, parents were reluctant to have their children vaccinated [31]. Therefore, most children were not vaccinated at the time. Fear of transmission to the children might contribute to stigma. The two remaining factors were the levels of education and income. These two variables were found to be associated with stigma severity in several previous studies [24, 25, 32]. A possible explanation is that the level of education was linked to the level of knowledge about COVID-19. People who have a low knowledge levels about COVID-19 tend to experience more stigma [24, 25, 33]. On the contrary, income might be related to income reduction from having to isolate themselves if infected [34].
Regarding clinical implications, since stigmatization and negative emotions are likely to peak in the initial stage after the return to the community, appropriate assessment and help should be emphasized in this period. Special attention should be paid to the older population, children, and people with a low socioeconomic status.
Strengths and limitations
This study is among the first studies that focused mainly on post-vaccination period stigma. Moreover, unlike other surveys, we included patients with a wide range of recovery period. Therefore, this allowed us to examine the relationship between time and stigma.
This study has some limitations. First, this study could not examine causal relationships between factors and stigma. Second, we did not explore the occurrence and relationship with Long COVID condition, which might confound the relationship with other factors. Lastly, generalizability might be limited to some extent because the studied population were restricted to patients with mild-to-moderate conditions and within the context of Thailand. Accordingly, cross-contextual studies are encouraged [35].