COVID-19 differentiated measures for unvaccinated individuals: The need for clear goals and strong justifications

Voo, Teck Chuan; Savulescu, Julian; Schaefer, Owen; Ling, Abel Ho Zhi; Tam, Clarence C.

doi:10.1016/j.vaccine.2022.06.051

Cited by 7 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to these issues, a certain number of pregnant women declined the COVID-19 vaccine. These pregnant women also suffered as the decision of women not to take the COVID-19 vaccine resulted in the temporary segregation of pregnant women to mitigate public health risks of the pandemic [11].…”

Section: Discussionmentioning

confidence: 99%

COVID-19 Vaccine Hesitancy among Perinatal Women

2023

J Community Med Public Health

View full text Add to dashboard Cite

The impacts of Coronavirus (COVID-19) on reproductive health are detrimental. COVID-19 vaccine is recommended for pregnant women to prevent infection and its sequelae [1]. Vaccine uptake among pregnant women is generally low. Our study aimed to explore views, predictors and uptake of the COVID-19 vaccine among perinatal women & explore the reasons and concerns for declining it. A prospective cross-sectional muti-centred study was conducted from 1st November 2021 to 31st March 2022. It included 364 perinatal women through convenience sampling. The data was analyzed with Microsoft Excel & SPSS version 28.0 along with thematic analysis. A reasonable number of patients were doubtful about the safety (166/364=45.6%) & effectiveness of the COVID-19 vaccine (111/364=34%), & declined the vaccine (104/364=28.5%). Logistic regression analyses revealed that the predictors for COVID-19 vaccine uptake included Irish ethnicity, older age, employed status, & beliefs about the safety & effectiveness of the COVID-19 vaccine. Major concerns for the declining vaccine were not enough data about vaccine safety in pregnancy & its novel use. There is a need for public health campaigns using the internet and social media for advocating COVID-19 vaccine safety and efficacy. A focused and pragmatic approach is justified in a subgroup of women with vaccine misinformation, myths, and disbelief. The importance of funding future research on vaccines in pregnancy can't be over-emphasized.

show abstract

Section: Discussionmentioning

confidence: 99%

COVID-19 Vaccine Hesitancy among Perinatal Women

2023

J Community Med Public Health

View full text Add to dashboard Cite

show abstract

“…The model of Fisman et al [ 9 ] is the special case of our model with m u = m v = 0, \begin{document}c_v^0\beta_v = c_u^0\beta_u\end{document} and γ v = γ u in which case the equal contact frequencies of both vaccinated and unvaccinated remain constant regardless of the level of segregation. Such an implementation does not represent how segregation has been applied during the coronavirus disease 2019 (COVID-19) era in Canada and many countries [ 14 - 17 , 21 ], since unvaccinated people were excluded from public spaces while vaccinated people were allowed access, thus changing venues and opportunities for contact as segregation is imposed.…”

Section: Methodsmentioning

confidence: 99%

Viral Respiratory Epidemic Modeling of Societal Segregation Based on Vaccination Status

Hickey,

Rancourt

2023

Cureus

View full text Add to dashboard Cite

Background: Societal segregation of unvaccinated people from public spaces has been a novel and controversial coronavirus disease 2019 (COVID-19)-era public health practice in many countries. Models exploring potential consequences of vaccination-status-based segregation have not considered how segregation influences the contact frequencies in the segregated groups. We systematically investigate implementing effects of segregation on population-specific contact frequencies and show this critically determines the predicted epidemiological outcomes, focusing on the attack rates in the vaccinated and unvaccinated populations and the share of infections among vaccinated people that were due to contacts with infectious unvaccinated people. Methods: We describe a susceptible-infectious-recovered (SIR) two-population model for vaccinated and unvaccinated groups of individuals that transmit an infectious disease by person-to-person contact. The degree of segregation of the two groups, ranging from zero to complete segregation, is implemented using the like-to-like mixing approach developed for sexually transmitted diseases, adapted for presumed severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) transmission. We allow the contact frequencies for individuals in the two groups to be different and depend, with variable strength, on the degree of segregation. Results: Segregation can either increase or decrease the attack rate among the vaccinated, depending on the type of segregation (isolating or compounding), and the contagiousness of the disease. For diseases with low contagiousness, segregation can cause an attack rate in the vaccinated, which does not occur without segregation. Interpretation: There is no predicted blanket epidemiological advantage to segregation, either for the vaccinated or the unvaccinated. Negative epidemiological consequences can occur for both groups.

show abstract

“…They also discussed the effect of mandates on workers, although briefly. Voo et al [46] examined the implementation of vaccination-based differentiated measures (VDMs) taking into consideration the fact that the vaccinated can still transmit the virus. They argued that VDMs can actually pose a threat since selectively raising the restrictions on high-risk settings can be a dangerous situation for both vaccinated and unvaccinated individuals.…”

Section: Singanayagam Et Al Constructed An Important Study With the A...mentioning

confidence: 99%

Elaboration and Analysis of SARS-CoV-2 Data in the Frame of Occupational Safety and Health Assessment in Sustainable Engineering Systems

Tatli,

Marhavilas

2024

Safety

View full text Add to dashboard Cite

Facing the threat of SARS-CoV-2, several countries implemented protective measures to annihilate the waves of the pandemic. Apart from quarantine, social distancing, frequent disinfection, and the use of a face mask, vaccination against COVID-19 soon became available. The measures taken in the workplace to inhibit the spread of the virus were important, as some controversial policies emerged regarding the vaccination status of employees. The “health pass” changed the workplace environment immensely, as in many job sectors vaccination became mandatory. Unvaccinated employees were required to undergo specific COVID-19 tests to access their workplace, while other specialized workers such as health workers were removed from their work altogether. Such measures would be justified if it was certain that vaccinated people cannot transmit the virus, but over the course of years this hypothesis seems to have faded. The main aim of this study is the confirmation (or the non-validation) of this hypothesis and of the specific applied measures through the elaboration and statistical analysis of vaccination data from 35 countries in relation to their daily announced infections over the time frame from the forty-fourth week of 2021 to the fourth week of 2022. This is examined from an occupational safety and health (OSH) perspective (taking into account the three pillars of sustainability) concerning risk management and safety assessment at the workplaces of sustainable engineering systems (SES). The findings imply that this hypothesis is contestable. Therefore, it is doubtful whether workplace segregation measures were socially and economically sustainable. It is deduced that (i) the complete freedom of vaccinated employees was a situation which intensified occupational risk, degraded the safety level at the workplaces of sustainable engineering systems, and increased the OSH risk management difficulties, and, on the other hand, (ii) the financial burden of mandatory unemployment and frequent testing was not justified and economically sustainable for the unvaccinated individuals in the middle of a worldwide economic crisis.

show abstract

COVID-19 differentiated measures for unvaccinated individuals: The need for clear goals and strong justifications

Cited by 7 publications

References 27 publications

COVID-19 Vaccine Hesitancy among Perinatal Women

COVID-19 Vaccine Hesitancy among Perinatal Women

Viral Respiratory Epidemic Modeling of Societal Segregation Based on Vaccination Status

Elaboration and Analysis of SARS-CoV-2 Data in the Frame of Occupational Safety and Health Assessment in Sustainable Engineering Systems

Contact Info

Product

Resources

About