Prevalence of gonorrhea and chlamydia in a community clinic for Men who Have Sex with Men in Portugal

Background

Men who have sex with men (MSM) are at greater risk for sexually transmitted infections (STIs). Data on MSM chlamydia and gonorrhea prevalence estimates and associated risk factors is scarce. To our knowledge, this is the first study to describe the prevalence and the determinants of both chlamydia and gonorrhea infections in MSM in Portugal.

Methods

We conducted a cross-sectional study using data from 1,832 visits to CheckpointLX, a community-based center for screening blood-borne viruses and other STIs in MSM.

Results

Overall prevalence of chlamydia or gonorrhea in our sample was 16.05%, with 14.23% coinfection and 40.73% asymptomatic presentation among those testing positive. Anorectal infection was most common for chlamydia (67.26%), followed by urethral (24.78%) and oral (19.47%) infection. Oral infection was most common for gonorrhea (55.63%), followed by anal (51.25%) and urethral (17.50%) infection. In multivariate analyses, young age (U = 94684, p = 0.014), being foreign-born (χ2=11.724, p = 0.003), reporting STI symptoms (χ2=5.316, p = 0.021), inhaled drug use (χ2=4.278, p = 0.039) and having a higher number of concurrent (χ2=18.769, p < 0.001) or total (χ2=5.988, p = 0.050) sexual partners were each associated with higher rates of chlamydia or gonorrhea infection.

Conclusions

Young and migrant MSM are a vulnerable population to STIs, as are those who use inhaled drugs and those with a higher number of concurrent or total sexual partners. Although Portugal has no guidelines on chlamydia and gonorrhea screening, our results point towards a need for greater awareness about the importance of high frequency screening for those at increased risk (i.e. every 3 to 6 months).

Key messages

Higher prevalence was found in young and migrant MSM, those with higher number of concurrent or total sexual partners, and those who use inhaled drugs. There is a need for greater awareness about the importance of high frequency STI screening for MSM at increased risk.

Rarity of monodominance in hyperdiverse Amazonian forests

Tropical forests are known for their high diversity. Yet, forest patches do occur in the tropics where a single tree species is dominant. Such “monodominant” forests are known from all of the main tropical regions. For Amazonia, we sampled the occurrence of monodominance in a massive, basin-wide database of forest-inventory plots from the Amazon Tree Diversity Network (ATDN). Utilizing a simple defining metric of at least half of the trees ≥ 10 cm diameter belonging to one species, we found only a few occurrences of monodominance in Amazonia, and the phenomenon was not significantly linked to previously hypothesized life history traits such wood density, seed mass, ectomycorrhizal associations, or Rhizobium nodulation. In our analysis, coppicing (the formation of sprouts at the base of the tree or on roots) was the only trait significantly linked to monodominance. While at specific locales coppicing or ectomycorrhizal associations may confer a considerable advantage to a tree species and lead to its monodominance, very few species have these traits. Mining of the ATDN dataset suggests that monodominance is quite rare in Amazonia, and may be linked primarily to edaphic factors.

Enhancing Low-Intensity Coaching in Parent Implemented Early Start Denver Model Intervention for Early Autism: A Randomized Comparison Treatment Trial

Short-term low intensity parent implemented intervention studies for toddlers with autism spectrum disorder (ASD) have found it difficult to demonstrate significantly improved developmental scores or autism severity compared to community treatment. We conducted a randomized comparative intent-to-treat study of a parent implemented intervention to (1) test the effects of an enhanced version on parent and child learning, and (2) evaluate the sensitivity to change of proximal versus distal measures of child behavior. We randomized 45 children with ASD, 12-30 months of age, into one of two versions of parent-implemented Early Start Denver Model (P-ESDM), the basic model, in which we delivered 1.5 h of clinic-based parent coaching weekly, and an enhanced version that contained three additions: motivational interviewing, multimodal learning tools, and a weekly 1.5-h home visit. We delivered the intervention for 12 weeks and measured child and parent change frequently in multiple settings. We found a time-by-group interaction: parents in the enhanced group demonstrated significantly greater gains in interaction skills than did parents in the non-enhanced group. Both interventions were associated with significant developmental acceleration; however, child outcomes did not differ by group. We found a significant relationship between degree of change in parental interaction skill and rate of children's improvement on our proximal measure. Parents in both groups reported satisfaction with the intervention. These findings suggest that parent skills improved more in the enhanced group than the comparison group. Children in the two groups showed similar improvements. Rate of individual parent learning was associated with greater individual child progress on a measure quite proximal to the treatment, though not on standardized assessments.

Species Distribution Modelling: Contrasting presence-only models with plot abundance data

Species distribution models (SDMs) are widely used in ecology and conservation. Presence-only SDMs such as MaxEnt frequently use natural history collections (NHCs) as occurrence data, given their huge numbers and accessibility. NHCs are often spatially biased which may generate inaccuracies in SDMs. Here, we test how the distribution of NHCs and MaxEnt predictions relates to a spatial abundance model, based on a large plot dataset for Amazonian tree species, using inverse distance weighting (IDW). We also propose a new pipeline to deal with inconsistencies in NHCs and to limit the area of occupancy of the species. We found a significant but weak positive relationship between the distribution of NHCs and IDW for 66% of the species. The relationship between SDMs and IDW was also significant but weakly positive for 95% of the species, and sensitivity for both analyses was high. Furthermore, the pipeline removed half of the NHCs records. Presence-only SDM applications should consider this limitation, especially for large biodiversity assessments projects, when they are automatically generated without subsequent checking. Our pipeline provides a conservative estimate of a species’ area of occupancy, within an area slightly larger than its extent of occurrence, compatible to e.g. IUCN red list assessments.

Early interventions practices in ASD – Maternal behavior in spontaneous interaction with their children

Recent studies point out that the occurrence of Autism Spectrum Disorders (ASD) is up to 1%. In Brazil, providing services of medical diagnosis for children with ASD takes precious time. The time spent waiting for the conclusion of the diagnostic process would be extremely important to the child's development. In this context, the parent–children interaction is an important aspect to be considered as a factor that has a positive impact in this process. The aim of this study was to explore maternal behavior during a spontaneous play situation with their children. All subjects were filmed for 30 minutes during a spontaneous play situation with their mothers that did not receive any special instructions. The subjects were 30 normal children, 3 of each age (respectively 9, 12, 15, 18, 21, 24, 27, 30, 33 and 36 months) and 20 autistic children with ages varying from 2:10 to 10:6 (not expected any chronological association). The whole corpus was analyzed considering of each subject, of each group and the possible associations between the groups. The analysis of the maternal behavior provides data about the importance of mother–child interaction and how everyday life activities and routines can be used to increase the opportunities to improve the ASD child's communicative abilities and their creative use as an important part of the whole development. These findings provide further evidence that families should be included in any plan for intervention designed towards ASD children.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

The effects of alexithymia in the recognition of dynamic emotional faces

Introduction

Alexithymia is a multifactorial personality trait observed in several mental disorders, especially those with poor social functioning. Although it has been proposed that difficulties in interpersonal interactions in highly alexithymic individuals may stem from their reduced ability to express and recognize facial expressions, this still remains controversial.

Aim

In everyday life, faces displaying emotions are dynamic, although most studies have relied on static stimuli. The aim of this study was to investigate whether individuals with high levels of alexithymia differed from a control group in the categorization of emotional faces presented in a dynamic way. Given the highly dynamic nature of facial displays in real life, we used morphed videos depicting faces varying 1% from neutral to angry, disgust or happy faces, with a video presentation of 35 seconds.

Method

Sixty participants (27 males and 33 females) were divided into high (HA) and low levels of alexithymia (LA) by using the Toronto Alexithymia Scale (TAS-20). Participants were instructed to watch the face change from neutral to an emotion and to press a keyboard as soon as they could categorize an emotion expressed in the face.

Results

The results revealed an interaction between alexithymia and emotion showing that HA, compared to LA, were more inaccurate at categorizing angry faces.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Evaluación de la diversidad en comunidades de tardígrados (Ecdysozoa: Tardigrada) en hábitats urbano y rural de la ciudad de Salta (Argentina)

RESÚMEN Este trabajo se realizó bajo la hipótesis de que existe una pérdida creciente de diversidad en las comunidades de tardígrados, desde las áreas rurales hacia las urbanas, incrementando la homogenización de sus comunidades producto de la urbanización. Para la ciudad de Salta, se tomaron muestras en áreas con tránsito vehicular alto y muestras en áreas rurales circundantes. Se identificaron en total ocho especies/morfoespecies. El inventario tuvo una completitud mayor al 94%. La comunidad rural fue más diversa y estructuralmente más uniforme que la comunidad urbana. Macrobiotus hufelandi Schultze, 1834 resultó especie indicadora y Milnesium sp. como detectora para el hábitat urbano, mientras que Paramacrobiotus areolatus Murray, 1907 resultó indicadora para el hábitat rural.