Identifying barriers to vaccination intention at walk-in vaccination facilities in deprived neighbourhoods: A cross-sectional survey.

OBJECTIVES: Low COVID-19 vaccination adherence in deprived neighbourhoods is problematic since the prevalence of chronic diseases associated with mortality rates due to COVID-19 is higher in these populations. The aim of this study is to provide an insight about beliefs and considerations relating to vaccination intention among inhabitants of deprived neighbourhoods in the Netherlands. DESIGN: Cross-sectional survey. SETTING: Easily accessible vaccination facilities at markets in deprived neighbourhoods in the Netherlands. PARTICIPANTS: Participants were recruited at three vaccination facilities that were set up at markets in deprived neighbourhoods in Rotterdam. A total of 124 surveys were retained for analysis. MAIN OUTCOME MEASURE: Intention to get vaccinated against COVID-19. RESULTS: The survey was filled out by 124 respondents; 62 % had - prior to visiting the easily accessible locations - intended to get a COVID-19 vaccine and 38 % were hesitant (22.3 % had doubts and 15.7 % did not plan to get vaccinated). Many people mentioned the convenience of an easily accessible location nearby. At the bivariate level, the influence of information from the family was associated with vaccination intention (p < 0.01). In a logistic regression model, both fear of vaccination and fear of side-effects were significantly associated with vaccination intention (ORs 0.56 (CI 0.35-0.89) and 0.47 (CI 0.30-0.73)). CONCLUSION: The accessibility of a vaccination facility, family influence and fear are relevant factors for the intention to get vaccinated against COVID-19 in people living in deprived neighbourhoods. Interventions should address these factors in order to increase vaccination uptake.

The role of socio-demographic and health factors during COVID-19 in remote access to GP care in low-income neighbourhoods: a cross-sectional survey of GP patients.

OBJECTIVES: Remote consultations were common in general practice during the COVID-19 pandemic. This approach may have affected access to GP care for people with low socio-economic status: this group has a high prevalence of chronic conditions and a higher mortality rate due to COVID-19. This study explores the association of sociodemographic and health factors with the decision to contact a GP practice, and care utilisation, among patients in low-income neighbourhoods in the Netherlands. DESIGN: Cross-sectional survey study. SETTING: General practice in low-income neighbourhoods in the Netherlands. PARTICIPANTS: Patients from low-income neighbourhoods were selected from fourteen general practices on the basis of ethnic background, chronic disease or health literacy. Participants were stratified according to categories of these background characteristics to obtain equal numbers per category. A total of 213 surveys were retained for analysis. MAIN OUTCOME MEASURES: Need for GP contact, decision to contact a GP practice, and GP service utilisation. RESULTS: Forty-five percent (N = 88) of the participants experienced health problems for which they wished to consult their GP at the start of the outbreak of COVID-19. A majority of them (81%) had contact with a GP service. The need to contact the GP was significantly associated with financial difficulties (OR 2.20 CI (1.10 to 4.39)). An interaction effect was found of health literacy with concerns about COVID-19 with in respondents with low health literacy a significant association between concerns about COVID-19 and a need for a GP appointment (OR 5.33 CI (2.09 to 13.59)) and absence of a significant association in the higher health literacy group (OR 1.14 CI (0.51 to 2.56)) . Moreover, 56% (N = 74) of the participants received remote care at least one time during the first wave of COVID-19. Female participants used remote care more often (OR 3.22 CI (1.57 to 6.59)) and participants aged 50 and over used remote care less often (OR 0.46 CI (0.21 to 0.97)). CONCLUSION: Many patients in low-income neighbourhoods were able to consult a GP, often remotely. However from the equity perspective, access to GP care should be safeguarded for patients with health problems, financial difficulties and low health literacy because of their greater need to consult a GP during times of crisis.

Limiting similarity and Darwin's naturalization hypothesis: understanding the drivers of biotic resistance against invasive plant species.

Several hypotheses have been proposed to explain biotic resistance of a recipient plant community based on reduced niche opportunities for invasive alien plant species. The limiting similarity hypothesis predicts that invasive species are less likely to establish in communities of species holding similar functional traits. Likewise, Darwin's naturalization hypothesis states that invasive species closely related to the native community would be less successful. We tested both using the invasive alien Ambrosia artemisiifolia L. and Solidago gigantea Aiton, and grassland species used for ecological restoration in central Europe. We classified all plant species into groups based on functional traits obtained from trait databases and calculated the phylogenetic distance among them. In a greenhouse experiment, we submitted the two invasive species at two propagule pressures to competition with communities of ten native species from the same functional group. In another experiment, they were submitted to pairwise competition with native species selected from each functional group. At the community level, highest suppression for both invasive species was observed at low propagule pressure and not explained by similarity in functional traits. Moreover, suppression decreased asymptotically with increasing phylogenetic distance to species of the native community. When submitted to pairwise competition, suppression for both invasive species was also better explained by phylogenetic distance. Overall, our results support Darwin's naturalization hypothesis but not the limiting similarity hypothesis based on the selected traits. Biotic resistance of native communities against invasive species at an early stage of establishment is enhanced by competitive traits and phylogenetic relatedness.

Microsatellite markers for the endangered fir Abies guatemalensis (Pinaceae).

Eight newly developed polymorphic microsatellite markers are presented for Abies guatemalensis Rehder, an endangered tree endemic to Mexico and Central America. These microsatellite markers are useful for evaluating the population genetics of the species which is threatened by greenery poaching in natural populations. Novel conservation plans are needed to secure a more sustainable use strategy and to preserve the genetic diversity of the species.

Evidence of sexuality in European Rubus (Rosaceae) species based on AFLP and allozyme analysis.

Reproduction of polyploid Rubus species is described as facultatively apomictic. Pollination is needed for seed set, but most seedlings are produced asexually by pseudogamy. Although sexual processes may occur, clonal diversity can be extremely low. We performed a pollination experiment to investigate the breeding system and used allozyme and AFLP markers to analyze genetic variation among and within seed families in R. armeniacus and R. bifrons. Pollination either with self or outcross pollen was necessary to trigger seed set. Outbreeding marginally increased the number and quality of seeds compared with selfing. The enzyme PGI revealed some genetic variation within seed families. Seven other enzyme systems were monomorphic. The more detailed AFLP analyses with five primer pairs detected the same rate of genetic variation (14-17% of seedlings were genetically distinct) and confirmed the allozyme results for the same individuals. No genetic variation was found between the seed families from within a species collected in widely separated populations, but clear species-specific differences were observed. The results support the view that polyploid Rubus species are pseudogamous apomicts with low genetic diversity among and within seed families. However, sexual reproduction occasionally occurs and contributes to the maintenance of genetic variation within natural populations.