COVID-19 Vaccination and Mental Health Outcomes among Greek Adults in 2021: Preliminary Evidence

Comparative Study of COVID-19 Vaccination Frequency Between Chronic Psychiatric Patients and the General Population

Background: COVID-19 vaccination rates among individuals with mental illness have raised concerns due to these individuals' increased vulnerability to infection and complications. Objectives: This study aimed to compare the frequency of COVID-19 vaccination between individuals with chronic psychiatric conditions and the general population. Methods: A descriptive-analytical study was conducted, including patients with psychiatric disorders and a comparison group without psychiatric problems. Data were collected between May 2023 and August 2023 using a simple random sampling method. Participants were diagnosed with psychiatric disorders according to DSM-5 criteria and completed a questionnaire. Results: In a study of 137 participants, including 67 healthy individuals, 38 with schizophrenia, and 32 with affective disorders, psychiatric patients had lower full vaccination rates (P < 0.001). Patients with schizophrenia received fewer doses than healthy individuals and those with affective disorders (coefficient = -0.54, P = 0.007). Even after adjusting for demographics, the relationship between schizophrenia and vaccination rates remained significant. Conclusions: Chronic psychiatric patients have lower COVID-19 vaccination rates compared to the general population. Targeted vaccination programs and improved access to psychiatric healthcare facilities are crucial for addressing the pandemic's disproportionate impact on this vulnerable group.

The Influence of Disagreements over COVID-19 Preventive Measures on Stress and Sleep Quality

In this paper we reported the rate of disagreements and their effect on stress levels and sleep quality. Data was collected from 573 South Dakota residents. We estimated two ordinary least squares regressions using stress and sleep quality due to COVID-19 as outcome variables. A high percentage (62.1%) of the participants reported disagreements over COVID-19 with friends and family members. Disagreements over COVID-19 were associated with a higher level of stress (β = 1.001, p = .000) and a lower level of sleep quality (β = -.431, p = .039). The results of this study should serve as a reminder to researchers to consider the impact of interpersonal conflict over public health measures with family and friends on mental health.

Association between previous SARs-CoV-2 infection and new prescription of antidepressant drugs: a case-control study in Friuli Venezia Giulia region, Italy

PURPOSE

A rise in affective and anxiety disorders and in antidepressant (AD) treatment during the COVID-19 pandemic has been extensively described, but few studies were provided at the individual level, further considering COVID-19 severity and vaccination status.

METHODS

Case-control study evaluating the association between the new use of ADs and a previous COVID-19 infection, in Friuli Venezia Giulia Region, Italy, from March 1, 2020, to July 19, 2022. Multiple conditional logistic regressions assess the association between a new AD use and a COVID-19 infection previous to the index date, stratified by gender, age and anti-COVID-19 vaccination status. Odds Ratios (OR) and 95% confidence intervals were reported.

RESULTS

COVID-19 was associated with AD treatment after the infection. The disease severity was positively associated with a growing risk of being dispensed an AD, with the highest risk in unvaccinated subjects previously hospitalised in ICU (OR = 28.77). The risk of using ADs after COVID-19 infection was higher in unvaccinated subjects aged 65 years and older, both females and males. The association between COVID-19 infection and AD dispensation in vaccinated subjects was not significant, with the exception of females aged 65 years and over.

CONCLUSIONS

Anti-COVID-19 vaccination, especially among the elderly, might prevent post-COVID AD treatment. Clinicians should be aware that COVID-19 patients requiring hospitalisation are more likely to experience these symptoms, given their higher risk of being dispensed ADs. Future studies may benefit by analysing the incidence of both mental disorders and psychotropic treatment in post-COVID patients, considering socioeconomic factors and vaccination status.

Does COVID-19 vaccination affect post-traumatic stress symptoms via risk perception? A large cross-sectional study among the Chinese population

OBJECTIVES

Although infection rates may increase after relaxation of the zero COVID strategy, the extensive vaccination campaign in China could potentially curb the spread of COVID-19, which may be associated with a low level of risk perception and post-traumatic stress symptoms (PTSS). However, the relationship between vaccination, risk perception and PTSS has not been studied extensively. This study aims to examine the associations between the number of COVID-19 vaccine doses, consistency in the type of each dose and time since vaccination with PTSS, and the mediating role of risk perception on such relationships in China.

STUDY DESIGN

Cross-sectional sampling with a self-report questionnaire was used to measure vaccination, PTSS and risk perception.

METHODS

The survey was conducted in Beijing, China, from 13 January to 9 February 2023. Linear regression analyses were conducted to test the relationship between vaccination, risk perception and PTSS.

RESULTS

The analysis included 55,803 individuals. In total, 72.86 % of participants received two doses of the COVID-19 vaccine. Regression results indicated that people with two doses of the COVID-19 vaccine had a lower level of PTSS (β = -1.232, 95 % confidence interval [CI]: -1.930, -0.534) than those who had not received any doses of the COVID-19 vaccine. Only the negative relationship between two-dose vaccination and PTSS was mediated by risk perception, while the negative relationship between the time since vaccination and PTSS was suppressed by risk perception.

CONCLUSIONS

This study showed that receiving the COVID-19 vaccine reduced PTSS by decreasing perceived risk. Vaccination time was negatively associated with PTSS, but this relationship was suppressed by risk perception.

Association between COVID-19 vaccination and critical outcomes among older adults with dementia: a comparative cohort study

Background

As COVID-19 vaccines became available, understanding their potential benefits in vulnerable populations has gained significance. This study explored the advantages of COVID-19 vaccination in individuals with cognitive disorders by analyzing health-related variables and outcomes.

Methods

A prospective cohort study analyzed electronic medical records of 25,733 older adults with cognitive disorders and 65,544 older adults without cognitive disorders from March 2020 to February 2022. COVID-19 vaccination status was the primary exposure variable, categorized as fully vaccinated or unvaccinated. The primary outcomes measured were all-cause mortality and hospitalization rates within 14 and 400 days post-vaccination. Data on vaccination status, demographics, comorbidities, testing history, and clinical outcomes were collected from electronic health records. The study was ethically approved by the relevant medical facility's Institutional Review Board (0075-22-MHS).

Results

Vaccinated individuals had significantly lower mortality rates in both groups. In the research group, the mortality rate was 52% (n = 1852) for unvaccinated individuals and 7% (n = 1,241) for vaccinated individuals (p < 0.001). Similarly, in the control group, the mortality rate was 13.58% (n = 1,508) for unvaccinated individuals and 1.85% (n = 936) for vaccinated individuals (p < 0.001), despite higher COVID-19 positivity rates. In the research group, 30.26% (n = 1,072) of unvaccinated individuals tested positive for COVID-19, compared to 37.16% (n = 6,492) of vaccinated individuals (p < 0.001). In the control group, 17.31% (n = 1922) of unvaccinated individuals were COVID-19 positive, while 37.25% (n = 18,873) of vaccinated individuals tested positive (p < 0.001). Vaccination also showed potential benefits in mental health support. The usage of antipsychotic drugs was lower in vaccinated individuals (28.43%, n = 4,967) compared to unvaccinated individuals (37.48%, n = 1,328; 95% CI [0.92-1.28], p < 0.001). Moreover, vaccinated individuals had lower antipsychotic drug prescription rates (23.88%, n = 4,171) compared to unvaccinated individuals (27.83%, n = 968; 95% CI [-1.02 to -0.63], p < 0.001). Vaccination appeared to have a positive impact on managing conditions like diabetes, with 38.63% (n = 6,748) of vaccinated individuals having diabetes compared to 41.55% (n = 1,472) of unvaccinated individuals (95% CI [0.24, 0.48], p < 0.001).

Discussion

The findings highlight the importance of vaccination in safeguarding vulnerable populations during the pandemic and call for further research to optimize healthcare strategies for individuals with cognitive disorders.

Influences of COVID-19 vaccination policy on students' vaccine acceptance

Background

Higher education institutions (HEIs) developed and implemented a mandatory COVID-19 vaccination policy to facilitate vaccine acceptance and vaccination among universities' staff and students. However, little is known about influences of the mandatory vaccination policy on health science students at a university and they tend to result in vaccine hesitancy.

Aim

To explore the influences of the mandatory COVID-19 vaccine policy on health sciences students' vaccine acceptance at HEIs in South Africa.

Setting

The study was conducted in one of the universities in the Western Cape Province, South Africa.

Methods

An interpretive qualitative exploratory-descriptive research was conducted with 10 participants who were selected using the purposive sampling method to participate in semi-structured interviews. Data were audio-recorded, transcribed verbatim and thematically analysed.

Results

Two themes and 12 sub-themes were identified during the data analysis, namely individual and group influencing factors, as well as contextual influencing factors.

Conclusion

This study revealed that the COVID-19 vaccination mandatory policy influenced the students' quality of life, academic performance and well-being. The findings from this study indicate that there were perceived barriers related to personal and contextual influencing factors than benefits of COVID-19 vaccination.

Contribution

The understanding of and insight into the influences of the mandatory vaccination policy provided a basis for further strategies that may be developed to address COVID-19 vaccine infodemic, vaccine hesitancy and its risk effects. This can be done through collaboration with different stakeholders to educate health science students about the perceived benefits of COVID-19 vaccination.