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Variability and climate change due to anthropic influence have brought about alterations to marine ecosystems, that, in turn, have affected the physiology and metabolism of ectotherm species, such as the common hammerhead shark (Sphyrna lewini). However, the impact that climate variability may have on this species' distribution, particularly in the Eastern Tropical Pacific Marine Corridor, which is considered an area with great marine biodiversity, is unknown. The purpose of this research was to evaluate the effect of derivate impact of climate change on the oceanographic distribution of the hammerhead shark (Sphyrna lewini) in the Eastern Tropical Pacific Marine Corridor, contrasting the present and future scenarios for 2050. The methodology used was an ecological niche model based on the KUENM R package software that uses the maximum entropy algorithm (MaxEnt). The modelling was made for the year 2050 under RCP2.6 and RCP8.5 scenarios. A total of 952 models were made, out of which only one met the statistical parameters established as optimal, for future scenarios. The environmental suitability for S.lewini shows that this species would migrate to the south in the Chilean Pacific, associated with a possible warming that the equatorial zone will have and the possible cooling that the subtropical zone of the South Pacific will have by 2050, the product of changes in oceanographic dynamics., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Francisco Javier Briceno Zuluaga reports financial support was provided by French National Research Institute for Sustainable Development. Aura Maria Rodriguez Burgos reports statistical analysis was provided by Migramar. Aura Maria Rodriguez Burgos reports financial support was provided by Alejandro Ángel Escobar Foundation. The data base from Migramar using here isn't free access but It was used under collaboration agreement., (Copyright © 2022 Elsevier Ltd. All rights reserved.)

Tungiasis is a cutaneous ectoparasitosis caused by the female sand flea Tunga penetrans whose higher prevalence occurs in Sub-Saharan Africa, South América and the Caribbean. We report a case of a 23 year old chilean male who presented dermal lesions suggestive of tungiasis on his return from Brazil. The diagnosis was confirmed by biopsy, identifying the arthropod and an egg from one of the lesions. The natural history, co-morbidities and treatment options were reviewed.

Nucleic acid and protein electrophoretic analyses of the Chilean isolate of infectious pancreatic necrosis virus showed that genomic RNA, as well as the major proteins, were indistinguishable from those of the VR-299 serotype. The data are in good agreement with the theory that the virus was introduced into Chile from North America.

We studied total utilization of antimicrobials from 1983 to 1987 at the Clinical Hospital, University of Chile. The method of defined daily doses suggested by the WHO was used for analysis. The peak value occurred in 1984 (28.3 DDD/1000 patient-days), the lowest in 1987 (19.9). Penicillins were the most frequently used drugs, followed by aminoglycosides and cephalosporins. The latter group was mainly used at the Intensive Care Unit (37.5% of total cephalosporin use) and by the Intermediate Surgical Unit (35.1%). Use of antimicrobials at the Neurology and Dermatology services represented 5.3 and 4.9% of total utilization, respectively (excluding cephalosporins). These methods may be employed for comparisons of antimicrobials use among Chilean hospitals.