We explain research gaps on Monkeypox (MPX) virus epidemiology in endemic countries and present hypotheses for the recent increase of MPX cases in West Africa as a possible explanation for the current epidemic in Europe, America, and Australia. The detection of >400 MPX cases in less than a month in May 2022, across many countries underscores the epidemic potential of MPX in humans and demonstrates several important research gaps. First, the true burden of MPX in West and Central Africa is poorly understood, although it is critical for prevention and control of future outbreaks. Second, the diversity and extent of the animal reservoir remain unknown. We hypothesize that the synanthropic rodent population has increased in recent years in Africa leading to more human-rodent interactions and thus increased transmission of MPXV. We further hypothesise that nearly 45 years after the end of routine smallpox vaccination, the larger and more interconnected immune-naïve population has crossed a threshold resulting in more sustainable human-to-human transmission of MPXV. The current epidemic in the Western World is possibly a consequence of increased local transmission of MPXV in Africa. A new estimation of the basic and effective reproduction rate (R₀ and R_e) in different populations is required. National, regional, and international collaborations are needed to address research gaps related to MPX outbreaks.

Background: Nosocomial meningitis is a medical emergency that requires early diagnosis, prompt initiation of therapy, and frequent admission to the intensive care unit (ICU).Methods: A retrospective study was conducted in adult patients diagnosed with nosocomial meningitis who required admission to the ICU between April 2010 and March 2020. Meningitis/ventriculitis and intracranial infection were defined according to Centers for Disease Control and Prevention guidelines.Results: An incidence of 0.75% of nosocomial meningitis was observed among 70 patients. The mean patient age was 59 years and 34% were ≥65 years. Twenty-two percent of patients were in an immunocompromised state. A clear predisposing factor for nosocomial meningitis (traumatic brain injury, basal skull fracture, brain hemorrhage, central nervous system [CNS] invasive procedure or device) was present in 93% of patients. Fever was the most frequent clinical feature. A microbiological agent was identified in 30% of cases, of which 27% were bacteria, with a predominance of Gram-negative over Gram-positive. Complications developed in 47% of cases, 24% of patients were discharged with a Glasgow coma scale <14, and 37% died. No clinical predictor of complications was identified. Advanced age (≥65 years old) and presence of complications were associated with higher hospital mortality. Conclusions: Nosocomial meningitis in intensive care has a low incidence rate but high mortality and morbidity. In a critical care patient with CNS-related risk factors, a high level of suspicion for meningitis must be employed, but diagnosis is hindered by several confounding factors.

Early introduction of appropriate antibiotherapy is one of the major prognostic-modifying factors in community acquired pneumonia (CAP). Despite established guidelines for empirical therapy, several factors may influence etiology and, consequently, antibiotic choices. The aims of this study were to analyze the etiology of CAP in adults admitted to a northern Portugal University Hospital and evaluate the yield of the different methods used to reach an etiological diagnosis, as well as analyze of the impact of patient demographic and clinical features on CAP etiology. We retrospectively analyzed 1901 cases of CAP with hospitalization. The diagnostic performance increased significantly when blood and sputum cultures were combined with urinary antigen tests. The most frequent etiological agent was Streptococcus pneumoniae (45.7%), except in August, when it was overtaken by gram-negative bacilli (GNB) and Legionella pneumophila infections. Viral infections were almost exclusive to winter and spring. A negative microbiological result was associated with increasing age, non-smoking and lack of both blood/sputum cultures. Younger age was a predictor for S. pneumoniae, Influenza and L. pneumophila infections. Active smoking without any previously known respiratory disease was a risk factor for legionellosis. COPD was associated with Haemophilus influenzae cases, while dementia was typical in GNB and S. aureus patients. Diabetes mellitus (DM) and heart disease were negative predictors of S. pneumoniae and H. influenzae, respectively. P. aeruginosa was an independent risk factor for mortality (OR 13.02, 95% CI 2.94-57.7). This study highlights the importance of a comprehensive microbiological diagnostic workup and provides clues to predicting the most probable CAP causative agents, based on a patient's clinical profile. These may be taken into account when establishing first line antibiotherapy.

Em território português, existem várias espécies autóctones de animais capazes de provocar envenenamento e doença clinicamente significativa, com potencial de gravidade. Das quatro espécies de serpentes com relevância clínica, as víboras (Vipera latastei e Vipera seoanei) são as mais preocupantes; podem causar doença grave e necessitam de abordagem hospitalar, monitorização e tratamento específico, incluindo soro antiveneno. As serpentes Malpolon monspessulanus e Macroprotodon brevis causam maioritariamente manifestações clínicas locais, sem tratamento específico. Apenas uma minoria das espécies de aranha presentes em Portugal possui quelíceras (apêndices bucais dos Chelicerata, em forma de tenaz ou gancho, que podem conter veneno ou encontrar-se ligados às glândulas venenosas, usados para predação ou captura de alimentos) suficientemente compridas para perfurar a pele humana, mas as picadas de Latrodectus tredecimguttatus e Loxosceles rufescens podem implicar tratamento diferenciado em ambiente hospitalar, com necessidade de vigilância ativa. O tratamento da picada das centopeias Scolopendra cingulata e Scolopendra oraniensis é sintomático. A única espécie de escorpião presente em território nacional, Buthus ibericus, causa geralmente sintomas locais com dor intensa; o tratamento habitualmente baseia-se apenas na administração de analgesia. Os insetos da ordem Hymenoptera, como as abelhas e vespas, possuem capacidade de libertar veneno através de picadas; a maior parte dos indivíduos apresenta apenas reações inflamatórias locais ou regionais, para as quais a aplicação de medidas sintomáticas é suficiente, mas indivíduos que apresentem hipersensibilidade ao veneno podem desenvolver reações anafiláticas. Na costa portuguesa e em águas pouco profundas, encontram-se várias espécies marinhas venenosas para os humanos, como Echiichthys vipera (peixe-aranha comum), Dasyatis pastinaca, Taeniura grabata e Myliobatis aquila (ratões), Scorpaena scrofa (rascasso-vermelho), Pelagia noctiluca, Chrysaora hysoscella e Physalia physalis (cnidários) e Hermodice carunculata (verme-do-fogo), cujas picadas necessitam apenas de tratamento sintomático. O contacto com as larvas ou cerdas (estruturas quitinosas com funções locomotoras ou tácteis) de Thaumetopoea pityocampa (lagarta-do-pinheiro) pode provocar reações cutâneas, oculares e, raramente, respiratórias; a sua abordagem também é sintomática.

Introduction: In industrialized countries, amebiasis usually occurs in migrants and travelers returning from areas where the disease is endemic, primarily by ingestion of contaminated food or water. Person-to-person transmission can occur, mainly by fecal-oral contact, but sexual transmission has also been described [1,[3], [4], [5]]. Presentation of case We report a man with Entamoeba histolytica colitis and a large liver abscess (16.5 × 14 cm) in Portugal, who had no relevant travel history and whose only risk factor was his heterosexual partner. The abscess required drainage of 1950 mL of “chocolate-milk” purulent fluid, with rapid symptomatic improvement. The diagnosis was established by real-time reverse transcription PCR for Entamoeba histolytica in the liver aspirate, with positive IgG antibodies. He received a total of 16 days of ceftriaxone and metronidazole followed by 7 days of paromomycin. Conclusion: As enteric infections may be sexually transmitted, in industrialized countries, even in the absence of travel, sexual history should not be neglected.