A comprehensive assessment of long-term SARS-CoV-2-specific adaptive immune memory in convalescent COVID-19 Solid Organ Transplant recipients.

Long-term adaptive immune memory has been reported among immunocompetent individuals up to eight months following SARS-CoV-2 infection. However, limited data is available in convalescent patients with a solid organ transplant. To investigate this, we performed a thorough evaluation of adaptive immune memory at different compartments (serological, memory B cells and cytokine [IFN-γ, IL-2, IFN-γ/IL12 and IL-21] producing T cells) specific to SARS-CoV-2 by ELISA and FluoroSpot-based assays in 102 convalescent patients (53 with a solid organ transplants (38 kidney, 5 liver, 5 lung and 5 heart transplant) and 49 immunocompetent controls) with different clinical COVID-19 severity (severe, mild and asymptomatic) beyond six months after infection. While similar detectable memory responses at different immune compartments were detected between those with a solid organ transplant and immunocompetent individuals, these responses were predominantly driven by distinct COVID-19 clinical severities (97.6%, 80.5% and 42.1%, all significantly different, were seropositive; 84% vs 75% vs 35.7%, all significantly different, showed IgG-producing memory B cells and 82.5%, 86.9% and 31.6%, displayed IFN-γ producing T cells; in severe, mild and asymptomatic convalescent patients, respectively). Notably, patients with a solid organ transplant with longer time after transplantation did more likely show detectable long-lasting immune memory, regardless of COVID-19 severity. Thus, our study shows that patients with a solid organ transplant are capable of maintaining long-lasting peripheral immune memory after COVID-19 infection; mainly determined by the degree of infection severity.

Pediatric Trauma Readiness: A Trauma-Specific Assessment to Complement the National Pediatric Readiness Project.

OBJECTIVES: The National Pediatric Readiness Project of the Emergency Medical Services for Children surveyed emergency departments in the United States in 2013 for readiness to provide emergency care to children. However, that survey did not query for many elements considered essential to Advanced Trauma Life Support (ATLS). METHODS: Our pediatric trauma center and state department of health collaborated to develop a survey reflecting ATLS principles regarding pediatric-specific trauma stabilization, clinical/administrative resources, and interfacility transfer to complement the 2017 PedsReady survey. We distributed the survey to all emergency department medical directors in our state in 2017. RESULTS: Medical directors of all 11 emergency departments responded. Only 2 reported having physician or nurse pediatric trauma coordinators. Two reported comfort with all emergency procedures at all ages (eg, airway, traumatic pneumothorax treatment, etc), whereas 9 had variable thresholds of comfort by age and procedure. Reported utilization of pediatric trauma-specific protocols varied the following: hyperosmolar therapy (1), neurological assessment (3), chest injury (4), massive transfusion (1), triage (5), trauma transfer agreements (10), imaging-limitation protocols (4), internal (1) and inter-facility (4) quality assurance/quality improvement process (1), and real-time image transfer (11). CONCLUSIONS: This survey identified gaps in the readiness of emergency departments to treat injured children in our state that were not detected by the 2013 PedsReady surveys. Future surveys of emergency department pediatric readiness should consider more detailed, trauma-specific readiness questions. This will allow for assignment of more accurate goals and benchmarking standards for national pediatric trauma readiness.

Assessment of health risk related to the ingestion of trace metals through fish consumption in Todos os Santos Bay.

This study was carried out to evaluate the concentration of trace elements (As, Cd, Cu, Pb, and Zn) in the muscle of carnivorous fish species from three different areas of Todos os Santos Bay (BTS), Bahia State, Brazil. Trace elements were analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES), and consumption rates advisory for minimizing chronic systemic effects in children and adults were estimated. As concentrations in fish samples from Jiribatuba were higher than legal limits set by FAO, and Cd concentrations in fish from Iguape Bay were high in comparison with FAO and EC. This study provides information about the fish consumption limits, considering the elements concentrations observed in the analyses, in particular As and Cd, necessary for minimizing potential health risks.