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1.
Emerg Infect Dis ; 30(7): 1459-1462, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38916804

RESUMEN

Spotted fever rickettsiosis is rarely observed in solid organ transplant recipients, and all previously reported cases have been associated with tick bite months to years after transplantation. We describe a kidney transplant recipient in North Carolina, USA, who had a moderately severe Rickettsia parkeri infection develop during the immediate posttransplant period.


Asunto(s)
Trasplante de Riñón , Infecciones por Rickettsia , Rickettsia , Humanos , Trasplante de Riñón/efectos adversos , Rickettsia/genética , Rickettsia/aislamiento & purificación , North Carolina , Infecciones por Rickettsia/diagnóstico , Infecciones por Rickettsia/microbiología , Masculino , Receptores de Trasplantes , Persona de Mediana Edad , Antibacterianos/uso terapéutico , Femenino
2.
Am J Transplant ; 24(1): 115-122, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37717630

RESUMEN

In the United States, there is currently no system to track donated human tissue products to individual recipients. This posed a challenge during an investigation of a nationwide tuberculosis outbreak that occurred when bone allograft contaminated with Mycobacterium tuberculosis (Lot A) was implanted into 113 patients in 18 US states, including 2 patients at 1 health care facility in Colorado. A third patient at the same facility developed spinal tuberculosis with an isolate genetically identical to the Lot A outbreak strain. However, health care records indicated this patient had received bone allograft from a different donor (Lot B). We investigated the source of this newly identified infection, including the possibilities of Lot B donor infection, product switch or contamination during manufacturing, product switch at the health care facility, person-to-person transmission, and laboratory error. The findings included gaps in tissue traceability at the health care facility, creating the possibility for a product switch at the point of care despite detailed tissue-tracking policies. Nationally, 6 (3.9%) of 155 Lot B units could not be traced to final disposition. This investigation highlights the critical need to improve tissue-tracking systems to ensure unbroken traceability, facilitating investigations of recipient adverse events and enabling timely public health responses to prevent morbidity and mortality.


Asunto(s)
Tuberculosis , Humanos , Estados Unidos , Tuberculosis/epidemiología , Brotes de Enfermedades , Salud Pública , Donantes de Tejidos , Instituciones de Salud
3.
Transfusion ; 64(4): 627-637, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38476028

RESUMEN

BACKGROUND: Transfusion-related errors are largely preventable but may lead to blood product wastage and adverse reactions, resulting in patient harm. In the United States, the incidence of transfusion-related errors is poorly understood nationally. We used data from the National Healthcare Safety Network (NHSN) Hemovigilance Module to describe and quantify transfusion-related errors, as well as associated transfusion-related adverse reactions and blood product wastage. METHODS: During 2014-2022, data from the NHSN Hemovigilance Module were used to analyze errors, including near misses (errors with no transfusion), incidents (errors with transfusion), and associated serious adverse reactions (severe, life-threatening, or death). RESULTS: During 2014-2022, 80 acute care facilities (75 adult; 5 pediatric) reported 63,900 errors. Most errors occurred during patient blood sample collection (21,761, 34.1%) and blood sample handling (16,277, 25.5%). Less than one-fifth of reported errors (9822, 15.4%) had a completed incident form. Of those, 8780 (89.3%) were near misses and 1042 (10.7%) incidents. More than a third of near misses (3363, 38.3%) were associated with a discarded blood product, resulting in 4862 discarded components. Overall, 87 adverse reactions were associated with errors; six (7%) were serious. CONCLUSIONS: Over half of the transfusion-related errors reported to the Hemovigilance Module occurred during blood sample collection or sample handling. Some serious adverse reactions identified were associated with errors, suggesting that additional safety interventions may be beneficial. Increased participation in the Hemovigilance Module could enhance generalizability and further inform policy development regarding error prevention.


Asunto(s)
Seguridad de la Sangre , Reacción a la Transfusión , Humanos , Niño , Reacción a la Transfusión/epidemiología , Reacción a la Transfusión/etiología , Transfusión Sanguínea , Bancos de Sangre , Atención a la Salud
4.
MMWR Morb Mortal Wkly Rep ; 72(5253): 1385-1389, 2024 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-38175804

RESUMEN

During July 7-11, 2023, CDC received reports of two patients in different states with a tuberculosis (TB) diagnosis following spinal surgical procedures that used bone allografts containing live cells from the same deceased donor. An outbreak associated with a similar product manufactured by the same tissue establishment (i.e., manufacturer) occurred in 2021. Because of concern that these cases represented a second outbreak, CDC and the Food and Drug Administration worked with the tissue establishment to determine that this product was obtained from a donor different from the one implicated in the 2021 outbreak and learned that the bone allograft product was distributed to 13 health care facilities in seven states. Notifications to all seven states occurred on July 12. As of December 20, 2023, five of 36 surgical bone allograft recipients received laboratory-confirmed TB disease diagnoses; two patients died of TB. Whole-genome sequencing demonstrated close genetic relatedness between positive Mycobacterium tuberculosis cultures from surgical recipients and unused product. Although the bone product had tested negative by nucleic acid amplification testing before distribution, M. tuberculosis culture of unused product was not performed until after the outbreak was recognized. The public health response prevented up to 53 additional surgical procedures using allografts from that donor; additional measures to protect patients from tissue-transmitted M. tuberculosis are urgently needed.


Asunto(s)
Mycobacterium tuberculosis , Tuberculosis , Humanos , Estados Unidos/epidemiología , Tuberculosis/epidemiología , Tuberculosis/diagnóstico , Mycobacterium tuberculosis/genética , Donantes de Tejidos , Brotes de Enfermedades , Aloinjertos
5.
Emerg Infect Dis ; 29(7): 1455-1458, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37279517

RESUMEN

Drowned organ donors can be exposed to environmental molds through the aspiration of water; transplantation of exposed organs can cause invasive mold infections in recipients. We describe 4 rapidly fatal cases of potentially donor-derived invasive mold infections in the United States, highlighting the importance of maintaining clinical suspicion for these infections in transplant recipients.


Asunto(s)
Hongos , Trasplante de Órganos , Humanos , Estados Unidos/epidemiología , Donantes de Tejidos , Receptores de Trasplantes , Trasplante de Órganos/efectos adversos
6.
Emerg Infect Dis ; 29(10): 1979-1989, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37561399

RESUMEN

During May 2018‒December 2022, we reviewed transfusion-transmitted sepsis cases in the United States attributable to polymicrobial contaminated apheresis platelet components, including Acinetobacter calcoaceticus‒baumannii complex or Staphylococcus saprophyticus isolated from patients and components. Transfused platelet components underwent bacterial risk control strategies (primary culture, pathogen reduction or primary culture, and secondary rapid test) before transfusion. Environmental samples were collected from a platelet collection set manufacturing facility. Seven sepsis cases from 6 platelet donations from 6 different donors were identified in patients from 6 states; 3 patients died. Cultures identified Acinetobacter calcoaceticus‒baumannii complex in 6 patients and 6 transfused platelets, S. saprophyticus in 4 patients and 4 transfused platelets. Whole-genome sequencing showed environmental isolates from the manufacturer were closely related genetically to patient and platelet isolates, indicating the manufacturer was the most probable source of recurrent polymicrobial contamination. Clinicians should maintain awareness of possible transfusion-transmitted sepsis even when using bacterial risk control strategies.


Asunto(s)
Plaquetas , Sepsis , Humanos , Estados Unidos/epidemiología , Transfusión de Plaquetas/efectos adversos , Sepsis/epidemiología , Sepsis/etiología , Transfusión Sanguínea , Bacterias/genética
7.
Am J Transplant ; 23(11): 1811-1814, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37914432

RESUMEN

In July 2022, the Pennsylvania Department of Health received two reports of laboratory-confirmed Legionnaires disease in patients who had recently received lung transplants from the same donor at a single Pennsylvania hospital. The donor's cause of death was freshwater drowning in a river, raising suspicion of potential donor-derived transmission, because Legionella bacteria naturally live in fresh water. Further investigation of patients receiving other organs from the same donor did not identify additional legionellosis cases. Health care-associated infection caused by water exposure at the hospital was also evaluated as a potential source of infection and was found to be unlikely. Hospital water quality parameter measurements collected during May-June 2022 were within expected ranges and no water disruptions were noted, although no testing for Legionella was performed during this period. Notifiable disease data did not identify any other Legionnaires disease cases with exposure to this hospital within the 6 months before or after the two cases. Although laboratory testing did not confirm the source of recipient infections, available data suggest that the most likely source was the donor lungs. This cluster highlights the need for increased clinical awareness of possible infection with Legionella in recipients of lungs from donors who drowned in fresh water before organ recovery.


Asunto(s)
Legionella , Enfermedad de los Legionarios , Humanos , Receptores de Trasplantes , Pennsylvania/epidemiología , Pulmón
8.
Transfusion ; 63 Suppl 4: S1-S7, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37052192

RESUMEN

INTRODUCTION: Reports have suggested the COVID-19 pandemic resulted in blood donation shortages and adverse impacts on the blood supply. Using data from the National Blood Collection and Utilization Survey (NBCUS), we quantified the pandemic's impact on red blood cell (RBC) and apheresis platelet collections and transfusions in the United States during year 2020. METHODS: The 2021 NBCUS survey instrument was modified to include certain blood collection and utilization variables for 2020. The survey was distributed to all US blood collection centers, all US hospitals performing ≥1000 surgeries annually, and a 40% random sample of hospitals performing 100-999 surgeries annually. Weighting and imputation were used to generate national estimates for whole blood and apheresis platelet donation; RBC and platelet transfusion; and convalescent plasma distribution. RESULTS: Whole blood collections were stable from 2019 (9,790,000 units; 95% CI: 9,320,000-10,261,000) to 2020 (9,738,000 units; 95% CI: 9,365,000-10,110,000). RBC transfusions decreased by 6.0%, from 10,852,000 units (95% CI: 10,444,000-11,259,000) in 2019 to 10,202,000 units (95% CI: 9,811,000-10,593,000) in 2020. Declines were steepest during March-April 2020, with transfusions subsequently rebounding. Apheresis platelet collections increased from 2,359,000 units (95% CI: 2,240,000-2,477,000) in 2019 to 2,408,000 units (95% CI: 2,288,000-2,528,000) in 2020. Apheresis platelet transfusions increased from 1,996,000 units (95% CI: 1,846,000-2,147,000) in 2019 to 2,057,000 units (95% CI: 1,902,000-2,211,000) in 2020. CONCLUSION: The COVID-19 pandemic resulted in reduced blood donations and transfusions in some months during 2020 but only a minimal annualized decline compared with 2019.


Asunto(s)
COVID-19 , Pandemias , Humanos , Estados Unidos/epidemiología , Donación de Sangre , Bancos de Sangre , COVID-19/epidemiología , COVID-19/terapia , Sueroterapia para COVID-19
9.
Transfusion ; 63 Suppl 4: S8-S18, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37070720

RESUMEN

BACKGROUND: National Blood Collection and Utilization Surveys (NBCUS) have reported decreases in U.S. blood collections and transfusions since 2008. The declines began to stabilize in 2015-2017, with a subsequent increase in transfusions in 2019. Data from the 2021 NBCUS were analyzed to understand the current dynamics of blood collection and use in the United States. METHODS: In March 2022, all community-based (53) and hospital-based (83) blood collection centers, a randomly selected 40% of transfusing hospitals performing 100-999 annual inpatient surgeries, and all transfusing hospitals performing ≥1000 annual inpatient surgeries were sent a 2021 NBCUS survey to ascertain blood collection and transfusion data. Responses were compiled, and national estimates were calculated for the number of units of blood and blood components collected, distributed, transfused, and outdated in 2021. Weighting and imputation were applied to account for non-responses and missing data, respectively. RESULTS: Survey response rates were 92.5% (49/53) for community-based blood centers, 74.7% (62/83) for hospital-based blood centers, and 76.3% (2102/2754) for transfusing hospitals. Overall, 11,784,000 (95% confidence interval [CI], 11,392,000-12,177,000) whole blood and apheresis red blood cell (RBC) units were collected in 2021, a 1.7% increase from 2019; 10,764,000 (95% CI, 10,357,000-11,171,000) whole blood-derived and apheresis RBC units were transfused, a 0.8% decrease. Total platelet units distributed increased by 0.8%; platelet units transfused decreased by 3.0%; plasma units distributed increased by 16.2%; and plasma units transfused increased by 1.4%. DISCUSSION: The 2021 NBCUS findings demonstrate a stabilization in U.S. blood collections and transfusions, suggesting a plateau has been reached for both.


Asunto(s)
Bancos de Sangre , Transfusión Sanguínea , Humanos , Estados Unidos , Transfusión de Componentes Sanguíneos , Encuestas y Cuestionarios , Plasma
10.
Transfusion ; 63 Suppl 4: S19-S42, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37702255

RESUMEN

BACKGROUND: The Department of Health and Human Services' National Blood Collection and Utilization Survey (NBCUS) has been conducted biennially since 1997. Data are used to estimate national blood collection and use. Supplemental data from the 2021 NBCUS not presented elsewhere are presented here. METHODS: Data on survey participation, donor characteristics, blood component cost, transfusion-associated adverse reactions, and implementation of blood safety measures, including pathogen-reduction of platelets, during 2021, were analyzed. Comparisons are made to 2019 survey data where available (2013-2019 for survey participation). RESULTS: During 2021, there were 11,507,000 successful blood donations in the United States, a 4.8% increase from 2019. Persons aged 45-64 years accounted for 42% of all successful blood donations. Donations by persons aged 65 years and older increased by 40.7%, while donations among minorities and donors aged <25 years decreased. From 2019 to 2021, the median price hospitals paid per unit of leukoreduced red blood cells, leukoreduced and pathogen-reduced apheresis platelets, and fresh frozen plasma increased. The largest increase in price per unit of blood component in 2021 was for leukoreduced apheresis platelets, which increased by ~$51. Between 2019 and 2021, the proportion of transfusing facilities reporting use of pathogen-reduced platelets increased, from 13% to 60%. Transfusion-related adverse reactions declined slightly between 2019 and 2021, although the rate of transfusion-transmitted bacterial infections remained unchanged. CONCLUSION: During 2021, blood donations increased nationally, although donations from those aged <25 years and minorities declined. The prices hospitals paid for most blood products increased, as did the use of pathogen-reduced platelets.


Asunto(s)
Eliminación de Componentes Sanguíneos , Reacción a la Transfusión , Humanos , Estados Unidos , Plaquetas , Transfusión de Componentes Sanguíneos , Donantes de Sangre
11.
MMWR Morb Mortal Wkly Rep ; 72(37): 1001-1004, 2023 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-37708069

RESUMEN

In July 2022, the Pennsylvania Department of Health received two reports of laboratory-confirmed Legionnaires disease in patients who had recently received lung transplants from the same donor at a single Pennsylvania hospital. The donor's cause of death was freshwater drowning in a river, raising suspicion of potential donor-derived transmission, because Legionella bacteria naturally live in fresh water. Further investigation of patients receiving other organs from the same donor did not identify additional legionellosis cases. Health care-associated infection caused by water exposure at the hospital was also evaluated as a potential source of infection and was found to be unlikely. Hospital water quality parameter measurements collected during May-June 2022 were within expected ranges and no water disruptions were noted, although no testing for Legionella was performed during this period. Notifiable disease data did not identify any other Legionnaires disease cases with exposure to this hospital within the 6 months before or after the two cases. Although laboratory testing did not confirm the source of recipient infections, available data suggest that the most likely source was the donor lungs. This cluster highlights the need for increased clinical awareness of possible infection with Legionella in recipients of lungs from donors who drowned in fresh water before organ recovery.


Asunto(s)
Ahogamiento , Legionella , Enfermedad de los Legionarios , Humanos , Enfermedad de los Legionarios/diagnóstico , Pennsylvania/epidemiología , Receptores de Trasplantes , Pulmón
12.
Bull Entomol Res ; 113(3): 419-429, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36920057

RESUMEN

The South American tomato moth, Phthorimaea absoluta (Meyrick), is one of the key pests of tomato in India. Since its report in 2014, chemical control has been the main means of tackling this pest, both in the open field and protected cultivation. Despite regular insecticidal sprays, many outbreaks were reported from major tomato-growing regions of South India during 2019-2020. A study was conducted to investigate the effect of insecticide resistance on biology, biochemical enzymes, and gene expression in various P. absoluta field populations viz., Bangalore, Kolar, Madurai, Salem, and Anantapur to commonly used insecticides such as flubendiamide, cyantraniliprole, and indoxacarb. Increased levels of insecticide resistance ratios (RR) were recorded in P. absoluta populations of different locations. A significant increase in cytochrome P450 monooxygenase (CYP/MFO) and esterase levels was noticed in the resistant population compared to susceptible one. Through molecular studies, we identified four new CYP genes viz., CYP248f (flubendiamide), CYP272c, CYP724c (cyantraniliprole), and CYP648i (indoxacarb). The expression levels of these genes significantly increased as the folds of resistance increased from G1 to G20 (generation), indicating involvement of the identified genes in insecticide resistance development in P. absoluta. In addition, the resistant populations showed decreased fecundity, increased larval development period, and adult longevity, resulting in more crop damage. The information generated in the present study thus helps in understanding the development of insecticide resistance by P. absoluta and suggests the farmers and researchers to use insecticides wisely by adopting insecticide resistance management as a strategy under integrated pest management.


Asunto(s)
Insecticidas , Mariposas Nocturnas , Solanum lycopersicum , Animales , Insecticidas/farmacología , Resistencia a los Insecticidas/genética , India , América del Sur , Larva
13.
Clin Infect Dis ; 74(5): 918-923, 2022 03 09.
Artículo en Inglés | MEDLINE | ID: mdl-34329411

RESUMEN

Ehrlichiosis has been infrequently described as transmissible through organ transplantation. Two donor-derived clusters of ehrlichiosis are described here. During the summer of 2020, 2 cases of ehrlichiosis were reported to the Organ Procurement and Transplantation Network (OPTN) and the Centers for Disease Control and Prevention (CDC) for investigation. Additional transplant centers were contacted to investigate similar illness in other recipients and samples were sent to the CDC. Two kidney recipients from a common donor developed fatal ehrlichiosis-induced hemophagocytic lymphocytic histiocytosis. Two kidney recipients and a liver recipient from another common donor developed ehrlichiosis. All 3 were successfully treated. Clinicians should consider donor-derived ehrlichiosis when evaluating recipients with fever early after transplantation after more common causes are ruled out, especially if the donor has epidemiological risk factors for infection. Suspected cases should be reported to the organ procurement organization and the OPTN for further investigation by public health authorities.


Asunto(s)
Ehrlichiosis , Trasplante de Riñón , Trasplante de Órganos , Obtención de Tejidos y Órganos , Ehrlichiosis/diagnóstico , Ehrlichiosis/etiología , Humanos , Trasplante de Riñón/efectos adversos , Trasplante de Órganos/efectos adversos , Donantes de Tejidos
14.
Emerg Infect Dis ; 28(2): 403-406, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34843660

RESUMEN

West Nile virus (WNV) is the most common domestic arbovirus in the United States. During 2018, WNV was transmitted through solid organ transplantation to 2 recipients who had neuroinvasive disease develop. Because of increased illness and death in transplant recipients, organ procurement organizations should consider screening during region-specific WNV transmission months.


Asunto(s)
Trasplante de Órganos , Fiebre del Nilo Occidental , Virus del Nilo Occidental , Selección de Donante , Humanos , Trasplante de Órganos/efectos adversos , Donantes de Tejidos , Estados Unidos/epidemiología , Fiebre del Nilo Occidental/diagnóstico , Fiebre del Nilo Occidental/epidemiología
15.
MMWR Morb Mortal Wkly Rep ; 71(26): 844-846, 2022 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-35771714

RESUMEN

The U.S. Public Health Service (PHS) has periodically published recommendations about reducing the risk for transmission of HIV, hepatitis B virus (HBV), and hepatitis C virus (HCV) through solid organ transplantation (1-4). Updated guidance published in 2020 included the recommendation that all transplant candidates receive HIV, HBV, and HCV testing during hospital admission for transplant surgery to more accurately assess their pretransplant infection status and to better identify donor transmitted infection (4). In 2021, CDC was notified that this recommendation might be unnecessary for pediatric organ transplant candidates because of the low likelihood of infection after the perinatal period and out of concern that the volume of blood drawn for testing could negatively affect critically ill children.* CDC and other partners reviewed surveillance data from CDC on estimates of HIV, HBV, and HCV infection rates in the United States and data from the Organ Procurement & Transplantation Network (OPTN)† on age and weight distributions among U.S. transplant recipients. Feedback from the transplant community was also solicited to understand the impact of changes to the existing policy on organ transplantation. The 2020 PHS guideline was accordingly updated to specify that solid organ transplant candidates aged <12 years at the time of transplantation who have received postnatal infectious disease testing are exempt from the recommendation for HIV, HBV, and HCV testing during hospital admission for transplantation.


Asunto(s)
Infecciones por VIH , Hepatitis B , Hepatitis C , Obtención de Tejidos y Órganos , Niño , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Hepacivirus , Hepatitis B/diagnóstico , Hepatitis B/epidemiología , Virus de la Hepatitis B , Hepatitis C/diagnóstico , Hepatitis C/epidemiología , Humanos , Donantes de Tejidos , Estados Unidos/epidemiología
16.
Transpl Infect Dis ; 24(2): e13800, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35064737

RESUMEN

Mycobacterium tuberculosis can be transmitted via organ donation and result in severe outcomes. To better understand donor-derived tuberculosis (DDTB), all potential transmissions reported to the Organ Procurement and Transplantation Network (OPTN) Ad Hoc Disease Transmission Advisory Committee between 2008 and 2018 were analyzed. Among 51 total reports, nine (17%) (9 donors/35 recipients) had ≥ 1 recipient with proven/probable disease transmission. Of these, eight were reported due to recipient disease, and one was reported due to a positive donor result. Proven/probable DDTB transmissions were reported in six lung and five nonlung recipients. The median time to diagnosis was 104 days posttransplant (range 0-165 days). Pulmonary TB, extrapulmonary TB, pulmonary plus extrapulmonary TB, and asymptomatic TB infection with positive interferon-gamma release assay were present in five, three, one, and two recipients, respectively. All recipients received treatment and survived except for one whose death was not attributed to TB. All donors associated with proven/probable DDTB had ≥ 1 TB risk factor. Six were born in a TB-endemic country, five had traveled to a TB-endemic country, three had been incarcerated, and three had latent TB infection. These cases highlight the importance of evaluating donors for TB based on risk factors. Early posttransplant TB in organ recipients of donors with TB risk factors requires prompt reporting to OPTN to identify other potential affected recipients and implement timely treatment interventions.


Asunto(s)
Trasplante de Órganos , Obtención de Tejidos y Órganos , Tuberculosis , Humanos , Trasplante de Órganos/efectos adversos , Donantes de Tejidos , Receptores de Trasplantes , Tuberculosis/diagnóstico , Estados Unidos/epidemiología
17.
Appl Opt ; 61(11): 2967-2974, 2022 Apr 10.
Artículo en Inglés | MEDLINE | ID: mdl-35471291

RESUMEN

The SuperCam remote sensing instrument on NASA's Perseverance rover is capable of four spectroscopic techniques, remote micro-imaging, and audio recording. These analytical techniques provide details of the chemistry and mineralogy of the rocks and soils probed in the Jezero Crater on Mars. Here we present the methods used for optical calibration of the three spectrometers covering the 243-853 nm range used by three of the four spectroscopic techniques. We derive the instrument optical response, which characterizes the instrument sensitivity to incident radiation as a function of a wavelength. The instrument optical response function derived here is an essential step in the interpretation of the spectra returned by SuperCam as it converts the observed spectra, reported by the instrument as "digital counts" from an analog to digital converter, into physical values of spectral radiance.


Asunto(s)
Calibración , Análisis Espectral
18.
Clin Infect Dis ; 72(6): 1051-1054, 2021 03 15.
Artículo en Inglés | MEDLINE | ID: mdl-32539111

RESUMEN

A kidney transplant patient without known tick exposure developed encephalitis 3 weeks after transplantation. During the transplant hospitalization, the patient had received a blood transfusion from an asymptomatic donor later discovered to have been infected with Powassan virus. Here, we describe a probable instance of transfusion-transmitted Powassan virus infection.


Asunto(s)
Virus de la Encefalitis Transmitidos por Garrapatas , Encefalitis Transmitida por Garrapatas , Encefalitis , Trasplante de Riñón , Virosis , Animales , Transfusión Sanguínea , Encefalitis/diagnóstico , Encefalitis/etiología , Encefalitis Transmitida por Garrapatas/diagnóstico , Humanos , Trasplante de Riñón/efectos adversos
19.
Clin Infect Dis ; 72(12): e1004-e1009, 2021 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-33252659

RESUMEN

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID-19), was first identified in Wuhan, China, in December 2019, with subsequent worldwide spread. The first US cases were identified in January 2020. METHODS: To determine if SARS-CoV-2-reactive antibodies were present in sera prior to the first identified case in the United States on 19 January 2020, residual archived samples from 7389 routine blood donations collected by the American Red Cross from 13 December 2019 to 17 January 2020 from donors resident in 9 states (California, Connecticut, Iowa, Massachusetts, Michigan, Oregon, Rhode Island, Washington, and Wisconsin) were tested at the Centers for Disease Control and Prevention for anti-SARS-CoV-2 antibodies. Specimens reactive by pan-immunoglobulin (pan-Ig) enzyme-linked immunosorbent assay (ELISA) against the full spike protein were tested by IgG and IgM ELISAs, microneutralization test, Ortho total Ig S1 ELISA, and receptor-binding domain/ACE2 blocking activity assay. RESULTS: Of the 7389 samples, 106 were reactive by pan-Ig. Of these 106 specimens, 90 were available for further testing. Eighty-four of 90 had neutralizing activity, 1 had S1 binding activity, and 1 had receptor-binding domain/ACE2 blocking activity >50%, suggesting the presence of anti-SARS-CoV-2-reactive antibodies. Donations with reactivity occurred in all 9 states. CONCLUSIONS: These findings suggest that SARS-CoV-2 may have been introduced into the United States prior to 19 January 2020.


Asunto(s)
COVID-19 , SARS-CoV-2 , Anticuerpos Antivirales , Donantes de Sangre , China , Connecticut , Ensayo de Inmunoadsorción Enzimática , Humanos , Inmunoglobulina G , Iowa , Massachusetts , Michigan , Oregon , Rhode Island , Glicoproteína de la Espiga del Coronavirus , Washingtón , Wisconsin
20.
Emerg Infect Dis ; 27(11): 2768-2775, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34670661

RESUMEN

Ehrlichiosis and anaplasmosis are emerging tickborne diseases that can also be transmitted through blood transfusions or organ transplants. Since 2000, ehrlichiosis and anaplasmosis cases in the United States have increased substantially, resulting in potential risk to transplant and transfusion recipients. We reviewed ehrlichiosis and anaplasmosis cases among blood transfusion and solid organ transplant recipients in the United States from peer-reviewed literature and Centers for Disease Control and Prevention investigations. We identified 132 cases during 1997-2020, 12 transfusion-associated cases and 120 cases in transplant recipients; 8 cases were donor-derived, and in 13 cases illness occurred <1 year after transplant. Disease in the remaining 99 cases occurred ≥1 year after transplant, suggesting donor-derived disease was unlikely. Severe illness or death were reported among 15 transfusion and transplant recipients. Clinicians should be alert for these possible infections among transfusion and transplant recipients to prevent severe complications or death by quickly treating them.


Asunto(s)
Anaplasmosis , Ehrlichiosis , Trasplante de Órganos , Anaplasmosis/epidemiología , Animales , Transfusión Sanguínea , Ehrlichiosis/epidemiología , Humanos , Trasplante de Órganos/efectos adversos , Receptores de Trasplantes , Estados Unidos/epidemiología
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