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Background In non-endemic countries, malaria can be transmitted through blood donations from imported cases. To ensure standards of quality and safety of human blood, the European Union and Spanish national law, requires a deferral period, or a screening by immunological or genomic test among those donors with potential risk of malaria. Scientifc societies, European Committee on Blood Transfusion, and Spanish Society of Haematology and Haemotherapy, refer only to the result of the immunological test. Methods An observational retrospective study was performed in potential donors with a positive immunological test for malaria done in the Regional Transfusion Center in Madrid and referred to the National Reference Unit for Tropical Diseases in Madrid between 2015–2020. At consultation a Polymerase Chain Reaction (PCR) for malaria was performed. Results During the study period, 121 possible donors attended for consultation at NRU-Trop. Median age: 38.5 (IQR:33–48); median time to consultation was 32 months (IQR:12.5–110). Eighty-two (67.8%) donors were migrants and thirty-nine were travellers (32.2%). ELISA values were available for 109 subjects (90.1%), 56 individual left malaria endemic area>3 years before. All donors tested negative for Plasmodium spp PCR test (n=121, 100%). Conclusions None of the subjects with a positive immunologic test deferred as blood donors had a positive genomic test. The presence of Plasmodium spp in collected blood was not detected by molecular techniques. To avoid the loss of potential blood donors, especially those with low incidence red blood cell antigens, as more precise microbiology techniques become available, updating the existing legislation becomes necessary to increase the availability of donated blood. [ABSTRACT FROM AUTHOR]

Keywords: Strongyloides; COVID-19; steroids; immunosuppression EN Strongyloides COVID-19 steroids immunosuppression 1 3 3 01/24/22 20220101 NES 220101 Certain helminth infections such as strongyloidiasis may be underdiagnosed in non-endemic areas due to the presence of asymptomatic individuals, the lack of awareness of the disease and the poor sensitivity of diagnostic methods. COVID-19 and dexamethasone: a potential strategy to avoid steroid-related strongyloides hyperinfection. Life-threatening complications of these infections may occur especially in patients with altered immune responses.1 Case report A 69-year-old Colombian man presented with abdominal pain and vomiting. [Extracted from the article]

Punctual mutations in the TEM-1 or TEM-2 gene may lead to inhibitor-resistant-TEM (IRT) beta-lactamases with resistance to beta-lactam-beta-lactamase inhibitor combinations and susceptibility to cephalosporins. The aim of this work was to analyze the current epidemiology of IRT beta-lactamases in contemporary clinical Escherichia coli. Isolates were prospectively collected in our hospital (2007 and 2008) from both outpatients (59.8%) and hospitalized patients (40.2%). The genetic relationships of the isolates were determined by XbaI pulsed-field gel electrophoresis, multilocus sequence typing, and phylogenetic group analysis. IRT genes were sequenced and located by hybridization, and the incompatibility group of the plasmids was determined. From a total of 3,556 E. coli isolates recovered during the study period, 152 (4.3%) showed reduced susceptibility to amoxicillin-clavulanate, with 18 of them producing IRT enzymes (0.5%). These were mostly recovered from urine (77.8%). A high degree of IRT diversity was detected (TEM-30, -32, -33, -34, -36, -37, -40, and -54), and the isolates were clonally unrelated but were mostly associated with phylogenetic group B2 (55.5%). In 12 out of 16 (75%) isolates, the bla(IRT) gene was plasmid located and transferred by conjugation in 9 of them, whereas chromosomal localization was demonstrated in 4 isolates (25%). The sizes of the plasmids ranged from 40 kb (IncN) to 100 kb (IncFII, IncFI/FIIA), and they showed different restriction patterns by restriction fragment length polymorphism analysis. Unlike extended-spectrum beta-lactamase producers, the frequency of IRT producers remains low in both community and hospital settings, with most of them causing urinary tract infections. Although bla(IRT) genes are mainly associated with plasmids, they can be also located in the chromosome. Despite this situation, clonal expansion and/or gene dispersion was not observed, denoting the independent emergence of these enzymes.