Factors associated with hand hygiene adherence among healthcare workers in Guatemala during the COVID-19 pandemic.

BACKGROUND: Healthcare-associated infections are prevalent in low- and middle-income countries and may be reduced through proper hand hygiene (HH) adherence during patient care. AIM: We produced and distributed alcohol-based hand rub (ABHR) to 19 public primary- and secondary-level healthcare facilities in Quetzaltenango, Guatemala, and carried out HH observations to assess healthcare workers' (HCWs) HH adherence, and to identify factors associated with this practice. HH adherence was defined as washing hands with soap and water or using ABHR. METHODS: Observations were conducted before (2021, baseline) and after (2022, follow-up) ABHR distribution to evaluate the evolution of HH practices over time. Bivariate comparisons and mixed-effects logistic regression models were used to explore associations between HH adherence and the following independent variables: healthcare facility level, type of contact performed, timing of HH performance, occupational category of HCW and materials present (e.g., water, soap, ABHR). FINDINGS: We observed 243 and 300 patient interactions among 67 and 82 HCWs at each time point, respectively. HH adherence was low for both observation periods (40% at baseline and 35% at follow-up). HCWs were more likely to adhere to HH during invasive contacts, after patient contact, and if the HCW was a physician. CONCLUSION: HH adherence varied by scenario, which underscores the importance of addressing multiple determinants of behaviour change to improve adherence. This requires interventions implemented with a multi-modal approach that includes both increasing access to HH materials and infrastructure, as well as HH education and training, monitoring and feedback, reminders, and promoting a HH safety culture.

Forearc carbon sink reduces long-term volatile recycling into the mantle.

Carbon and other volatiles in the form of gases, fluids or mineral phases are transported from Earth's surface into the mantle at convergent margins, where the oceanic crust subducts beneath the continental crust. The efficiency of this transfer has profound implications for the nature and scale of geochemical heterogeneities in Earth's deep mantle and shallow crustal reservoirs, as well as Earth's oxidation state. However, the proportions of volatiles released from the forearc and backarc are not well constrained compared to fluxes from the volcanic arc front. Here we use helium and carbon isotope data from deeply sourced springs along two cross-arc transects to show that about 91 per cent of carbon released from the slab and mantle beneath the Costa Rican forearc is sequestered within the crust by calcite deposition. Around an additional three per cent is incorporated into the biomass through microbial chemolithoautotrophy, whereby microbes assimilate inorganic carbon into biomass. We estimate that between 1.2 × 108 and 1.3 × 1010 moles of carbon dioxide per year are released from the slab beneath the forearc, and thus up to about 19 per cent less carbon is being transferred into Earth's deep mantle than previously estimated.

Current progress in the treatment of the child with cancer.

Treatment for the child with cancer has increasingly been on a rational rather than an empiric basis. An understanding has developed of the importance for determining clinical and laboratory features present at diagnosis as an aid not only to establish a prognosis but also to design specific treatment regimens. A system has been developed for bringing new chemotherapeutic agents into clinical trials as effectively as possible. Through both clinical and laboratory studies, an increasing understanding of the biology of cancer is being developed. This understanding will provide the basis for more rational treatment programs in the future. Physicians of different specialty interests have learned to work together to develop coordinated programs of treatment so important to optimal care. By far the most important lesson learned, however, is that cancer in children is not of necessity a fatal disease, even when dissemination has occurred. For the furture, it will be necessary to develop even more effective methods of treatment, and research must provide a better understanding of this disease that may offer the opportunity for prevention, which, after all, is the number one interest of the pediatrician.