The COVID-19 pandemic and obsessive-compulsive disorder in young people: Systematic review

BACKGROUND: The COVID-19 pandemic has impacted the world since the first cases were reported in China in January 2020. The secondary mental health impacts of the pandemic are thought to be significant. Obsessive-compulsive disorder is a condition defined by recurrent obsessions and compulsions. It has been hypothesised that the focus on hygiene and contamination during the pandemic could exacerbate obsessive-compulsive symptoms in young people. METHOD: A systematic literature review was conducted. Papers were sought looking at the effect of the pandemic on obsessive-compulsive disorder in young people. RESULTS: Six published cross-sectional and longitudinal studies were identified, of which four studies investigated clinic samples with a diagnosis of obsessive-compulsive disorder and two looked at community adolescent populations. Five out of the six studies found that obsessive-compulsive symptoms were exacerbated during the COVID-19 pandemic. CONCLUSION: The COVID-19 pandemic appears to be associated with a worsening of obsessive-compulsive symptoms in young people. Being in treatment seems to have a protective effect. Maintaining mental health services during a pandemic is vital. It is important to be aware of the implications of pandemic on obsessive-compulsive symptoms in young people in order to allow them to access appropriate treatments. More research is needed in this area

School, Supervision and Adolescent-Sensitive Clinic Care: Combination Social Protection and Reduced Unprotected Sex Among HIV-Positive Adolescents in South Africa

Social protection can reduce HIV-risk behavior in general adolescent populations, but evidence among HIV-positive adolescents is limited. This study quantitatively tests whether social protection is associated with reduced unprotected sex among 1060 ART-eligible adolescents from 53 government facilities in South Africa. Potential social protection included nine 'cash/cash-in-kind' and 'care' provisions. Analyses tested interactive/additive effects using logistic regressions and marginal effects models, controlling for covariates. 18 % of all HIV-positive adolescents and 28 % of girls reported unprotected sex. Lower rates of unprotected sex were associated with access to school (OR 0.52 95 % CI 0.33-0.82 p = 0.005), parental supervision (OR 0.54 95 % CI 0.33-0.90 p = 0.019), and adolescent-sensitive clinic care (OR 0.43 95 % CI 0.25-0.73 p = 0.002). Gender moderated the effect of adolescent-sensitive clinic care. Combination social protection had additive effects amongst girls: without any provisions 49 % reported unprotected sex; with 1-2 provisions 13-38 %; and with all provisions 9 %. Combination social protection has the potential to promote safer sex among HIV-positive adolescents, particularly girls

Coming of age? Women's sexual and reproductive health after twenty-one years of democracy in South Africa

This paper is a sequel to a 2004 article thet reviewed South Africa's introduction of new sexual and reproductive health (SRH) and rights, laws, policies and programmes, a decade into democracy. Similarly to the previous article this paper focuses on key areas of women's SRH: contraception and fertility abortion maternal health HIV cervical and breast cancer and sexual violence. In the last decade South Africa has retained and expanded its sexual and reproductive health and rights (SRHR) policies in the areas of abortion contraception youth and HIV treatment (with the largest antiretroviral treatment programme in the world). These are positive examples within the SRHR policy arena. These improvements include fewer unsafe abortions AIDS deaths and vertical HIV transmission as well as the public provision of a human papillomavirus vaccine to prevent cervical cancer. However persistent socio-economic inequities and gender inequality continue to profoundly affect South African women's SRHR. The state shows mixed success over the past two decades in advancing measurable SRH social justice outcomes and in confronting and ameliorating social norms that undermine SRHR

Incidence of fatal food anaphylaxis in people with food allergy: a systematic review and meta-analysis

BACKGROUND: Food allergy is a common cause of anaphylaxis, but the incidence of fatal food anaphylaxis is not known. The aim of this study was to estimate the incidence of fatal food anaphylaxis for people with food allergy and relate this to other mortality risks in the general population. METHODS: We undertook a systematic review and meta-analysis, using the generic inverse variance method. Two authors selected studies by consensus, independently extracted data and assessed the quality of included studies using the Newcastle-Ottawa assessment scale. We searched Medline, Embase, PsychInfo, CINAHL, Web of Science, LILACS or AMED, between January 1946 and September 2012, and recent conference abstracts. We included registries, databases or cohort studies which described the number of fatal food anaphylaxis cases in a defined population and time period and applied an assumed population prevalence rate of food allergy. RESULTS: We included data from 13 studies describing 240 fatal food anaphylaxis episodes over an estimated 165 million food-allergic person-years. Study quality was mixed, and there was high heterogeneity between study results, possibly due to variation in food allergy prevalence and data collection methods. In food-allergic people, fatal food anaphylaxis has an incidence rate of 1.81 per million person-years (95%CI 0.94, 3.45; range 0.63, 6.68). In sensitivity analysis with different estimated food allergy prevalence, the incidence varied from 1.35 to 2.71 per million person-years. At age 0–19, the incidence rate is 3.25 (1.73, 6.10; range 0.94, 15.75; sensitivity analysis 1.18–6.13). The incidence of fatal food anaphylaxis in food-allergic people is lower than accidental death in the general European population. CONCLUSION: Fatal food anaphylaxis for a food-allergic person is rarer than accidental death in the general population

Evaluation of machine-learning methods for ligand-based virtual screening

Machine-learning methods can be used for virtual screening by analysing the structural characteristics of molecules of known (in)activity, and we here discuss the use of kernel discrimination and naive Bayesian classifier (NBC) methods for this purpose. We report a kernel method that allows the processing of molecules represented by binary, integer and real-valued descriptors, and show that it is little different in screening performance from a previously described kernel that had been developed specifically for the analysis of binary fingerprint representations of molecular structure. We then evaluate the performance of an NBC when the training-set contains only a very few active molecules. In such cases, a simpler approach based on group fusion would appear to provide superior screening performance, especially when structurally heterogeneous datasets are to be processed

From comprehensive medicine to public health at the University of Cape Town: a 40-year journey

We explore the history of the School of Public Health at the University of Cape Town and its relationship to changes in the understanding of the role of public health both nationally and internationally. We draw from primary and secondary sources to trace the emergence, growth and development of the School, and to situate these processes within the socio-political, clinical and public health contexts in South Africa and internationally

Quantum line bundles on noncommutative sphere

Noncommutative (NC) sphere is introduced as a quotient of the enveloping algebra of the Lie algebra su(2). Using the Cayley-Hamilton identities we introduce projective modules which are analogues of line bundles on the usual sphere (we call them quantum line bundles) and define a multiplicative structure in their family. Also, we compute a pairing between certain quantum line bundles and finite dimensional representations of the NC sphere in the spirit of the NC index theorem. A new approach to constructing the differential calculus on a NC sphere is suggested. The approach makes use of the projective modules in question and gives rise to a NC de Rham complex being a deformation of the classical one.Comment: LaTeX file, 15 pp, no figures. Some clarifying remarks are added at the beginning of section 2 and into section