Background Abdominal pain and other gastrointestinal symptoms are common presenting features of multisystem inflammatory syndrome in children (MIS-C) and can overlap with infectious or inflammatory abdominal conditions, making accurate diagnosis challenging. Case Presentation We describe the case of a 16-year-old female who presented with clinical symptoms suggestive of appendicitis and an abdominal computed tomography (CT) that revealed features concerning for appendicitis. After laparoscopic appendectomy, histopathology of the appendix demonstrated only mild serosal inflammation and was not consistent with acute appendicitis. Her overall clinical presentation was felt to be consistent with MIS-C and she subsequently improved with immunomodulatory and steroid treatment. Conclusions We note that MIS-C can mimic acute appendicitis. This case highlights MIS-C as a cause of abdominal imaging with features concerning for appendicitis, and MIS-C should be considered in the differential for a patient with appendicitis-like symptoms and a positive COVID-19 IgG. Lab criteria, specifically low-normal white blood cell count and thrombocytopenia, appears to be of high relevance in differing MIS-C from acute appendicitis, even when appendix radiologically is dilated.

Eurasian beavers, keystone species, have returned to inhabit much of its former range following near extinction. Evidence repeatedly demonstrates that beavers can provide important riparian biotic and abiotic ecosystem services. These abilities to modify their surroundings can cause conflict, especially in prime agricultural landscapes. Understanding how beavers are utilizing and expanding in European catchments is therefore essential. This paper presents a methodology by which the spatial extent and environmental impact of beavers can be quantified via distinctive field signs. This has widespread application in understanding their distribution, expansion, and any management implications. Its application is tested within two diverse case studies, the Tayside catchment, Scotland, and the Wye catchment, Wales/England, collectively covering >10,000 km2 of catchment area. A minimum of 114 active territories were identified in Tayside and a small number of free‐roaming beavers with no strong evidence of breeding territories were recorded on the River Wye. This study demonstrates that a detailed, time and cost efficient but also easily replicable, field survey method can allow estimates of beaver territorial zones when combined with geospatial analysis and expert assessment. As populations of Eurasian beavers continue to expand and be actively reintroduced across Europe, this survey‐based approach can be utilized to increase understanding of their distribution, population dynamics, and territorial behavior, as well as informing management strategies and identifying areas of potential benefit and/or conflict.

Background: Numerous translocations of Eurasian beavers have occurred with little implementation of standardised health screening. Pre‐release health screening enables the selection of individuals with the best survival prospects and reduces potential health risks, but this is by‐passed during unofficial releases. Beaver reintroduction to Britain has been haphazard and currently disjunctive populations of varying status exist. Methods: This observational cross section study investigated the health status of three beaver populations, with 90 live beavers tested for a range of pathogens comprising 56 from Tayside (unofficially released Scotland), nine from Knapdale (officially released Scotland) and 25 from Devon (unofficially released England). In addition, a further 32 cadavers were screened (25 from Tayside and seven from Knapdale). Results: All beavers were in good physical condition, did not harbour any non‐native disease or parasites of concern and demonstrated remarkably low levels of any disease or parasite exposure. Conclusion: Beavers are establishing and adapting well to British landscapes and are not acting as reservoirs of significant zoonotic diseases. Official, licensed reintroduction programmes may appear overly convoluted; however, reputational damage of unofficial releases should be considered, along with the health and welfare of the animals involved and collateral damage to other wildlife, domestic animals and humans.

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Research suggests that infants fed human milk from a bottle versus the breast may have higher weight gains in the first 6 to 12 months of life. The purpose of this study was to determine if infants fed human milk directly from the breast differed in growth and adiposity measurements compared to those fed human milk from the bottle. Infant's weight, length, and tricep and subscapular skinfold thickness were measured at 2 and 4 months. Mothers reported birth weight and length and completed monthly questionnaires on infant feeding practices (e.g., number of human milk feedings by bottle or breast per day, age of introduction to complementary foods, and infant bottle‐emptying behavior). Infants were placed into 2 groups based on their reported mode of feeding at 3 months: Nursing Group (NG, n=15), infants fed predominantly at the breast with less than 25% of the feeds from a bottle and Bottle Group (BG, n=10), infants fed human milk from the bottle more than 25% of the feeds. Change in BMI Z scores from 2 to 4 months were significantly different between groups (NG=‐0.18 ± 0.67 vs BG=0.48 ± 0.73, p=0.03). Changes in skinfold thickness from 2 to 4 months were not statistically different between groups. Weight gain velocity from 2 to 4 months was compared to WHO weight velocity standards. Only 3 infants in each group exceeded the 75th percentile for weight gain velocity. The majority of parents reported those infants fed human milk from the bottle finished the bottle “most of the time” or “all of the time.” None of the infants were introduced to complementary foods before 4 months. The results of this study suggest that bottle‐feeding human milk may be related to differences in weight gain during 2 to 4 months. However, follow up for a longer time period with a larger sample size is necessary to fully investigate the relationship of bottle‐feeding with infant growth.