[Pharmacovigilance of COVID-19 Vaccines in Brazil: Actions Taken, Lessons Learned, and Next StepsFarmacovigilancia de las vacunas contra la COVID-19 en Brasil: medidas adoptadas, enseñanzas extraídas y próximos pasos].

Objective: To document the actions taken by Brazil's National Immunization Program for the pharmacovigilance of COVID-19 vaccines.

Methods: Documentary research on the period 2020 to 2023. Documentary sources from the national Ministry of Health during COVID-19 vaccination were used to analyze and interpret the actions taken.

2D Facial Analysis Performed by a Human Operator Versus an Artificial Intelligence Software.

Background: Artificial intelligence (AI) has been a contribution in recent years to the development of new tools for dental, surgical, and esthetic treatment. In the case of image diagnosis, AI allows automated analysis of some facial parameters. The aim of this study was to evaluate the precision and reproducibility of these IA analyses compared with a human operator.

Spatiotemporal Dynamics of SARS-CoV-2 Variants During the First Year of the Pandemic Highlight the Earlier Emergence of the Zeta Variant of Interest in Brazil.

During the COVID-19 pandemic, SARS-CoV-2 caused an alarming number of cases and deaths worldwide. Brazil was severely affected from late 2020 onward, especially after the emergence of variants of concern (VOCs) and variants of interest (VOIs). Although much is known about the dynamics and evolution of SARS-CoV-2 VOIs and VOCs in the country, information is still lacking on how the cocirculation of several SARS-CoV-2 lineages, along with the lack of vaccination and low adherence to social isolation measures, shaped the first year of the COVID-19 pandemic in Brazil.

Production and Characterization of Silk Fibroin- Hydrogel: A Study on Extraction, Hydrogel Properties, and Release Mechanism.

This work investigated the production and characterization of a silk fibroin (SF) hydrogel incorporated with an (AV) extract. Four extraction methods, ultrasound-assisted extraction with bath and probe, stirring, and Soxhlet, were tested, while the hydrogel was produced by a one-step freeze-thaw method. Besides the extraction yield, the antioxidant capacity of the extracts was accessed, which allowed to select the extract obtained by ultrasound-assisted extraction to be incorporated into the hydrogels.