A term infant with severe hypereosinophilia secondary to CMV infection and the STAT1 gene mutation: a case report : List of authors.

Hypereosinophilia is a rare presentation in all age groups, particularly when it is severe, persistent, and progressive. We describe the clinical characteristics and course of severe hypereosinophilia in a full-term Saudi female neonate. A febrile respiratory illness evolved with a progressive increase in peripheral blood leukocyte and eosinophil counts, reaching 44.9% of leukocytes and an absolute value of 57,000 cells/µl. Different etiological examinations (for viral, bacterial, immunodeficiency, hyper IgE syndrome, gene mutations) revealed extremely high CMV antigenemia and a homozygous mutation in the STAT1 gene. Anhelation was relieved by oxygen and anti-viral treatment. Steroids brought a dramatic response in peripheral blood counts within 24 h. After a 6-week course of antiviral and steroid treatment at home, she had an excellent general condition. Conclusion: Although a rare pathology, it is important to consider genetic disorders when there is an atypical immune response to viral infections.

A Rare Case of a Child Diagnosed With Multisystem Inflammatory Syndrome After COVID-19 Presenting With Renal Infarctions and Transient Blast Cells: A Case Report and Literature Review.

Multisystem inflammatory syndrome in children (MIS-C) can develop weeks after the Coronavirus disease 2019 (COVID-19). The disease's clinical spectrum includes persistent febrile illness, features resembling Kawasaki disease, and cytokine storm symptoms. In severe cases, multisystem organ failure and death may result if not treated promptly. This report discusses a rare case of a 13-year-old girl presenting with fever and acute kidney injury (AKI) eight weeks after recovering from COVID-19 who was diagnosed with MIS-C. A 13-year-old female presented with a fever and abdominal pain following a recent COVID-19. A physical examination revealed a febrile, ill-looking child with abdominal tenderness. Pancytopenia, transaminitis, AKI, and a hyperinflammatory state were noted in the initial laboratory workup. Furthermore, blast cells were seen on the peripheral blood smear. Despite appropriate empiric antibiotic therapy for sepsis, she did not show signs of clinical improvement. An abdominal computed tomography (CT) scan revealed multiple focal areas of hypoattenuating lesions involving both kidneys, suggestive of bilateral renal infarction. Since she met the criteria of the Centers for Disease Control and Prevention (CDC) for MIS-C diagnosis, a high dose of intravenous immunoglobulin (IVIG) led to a dramatic improvement in the patient's condition and complete recovery from her illness. This case report describes a rare clinical presentation of MIS-C in a child who presented with AKI due to presumably thrombotic events and transient blast cells in blood film secondary to a severe inflammatory process. Further studies are needed to determine the prevalence of thrombotic AKI associated with MIS-C.

COVID-19 in Saudi Patients With Sickle Cell Disease: A Retrospective Multi-Center Study.

Background The prevalence of sickle cell disease (SCD) within Saudi Arabia is relatively high, with an estimated 145/10,000 cases. There is an urgent need for researching many aspects of the Coronavirus disease of 2019 (COVID-19) due to the widespread of the virus among SCD patients in Saudi Arabia. The aim of this study is to determine how COVID-19 affects SCD patients in order to reach the best strategy for their management protocols. Methods This is a retrospective chart review study from a multi-center in Saudi Arabia that evaluated a total of 33 patients with sickle cell anemia/disease who were confirmed to have COVID-19. The diagnosis of COVID-19 was confirmed by using the reverse transcription-polymerase chain reaction (RT-PCR) tests based on the nasopharyngeal swabs of the included patients. Results The mean age of patients was 10.75+9.11 years, and nearly all patients (n= 32; 96.9%) were Saudi, and 48.4% of them were females. Twenty-two patients were admitted (59.5%); the main reasons for admission included vaso-occlusive crisis (VOC) only (n= 6; 27.3%), fever (n= 6; 27.3%), acute chest syndrome (n= 5; 22.7%), and VOC combined with other conditions (n= 4; 18.2%). During hospitalization, 54.1% of the patients received at least one medication, while antibiotics (54.1%), analgesia (32.4%), anticoagulants (16.2%), and steroids (16.2%) were the most commonly administered drugs. The mean length of hospitalization was 7.6±4.5 days, with only one patient (2.7%) requiring intensive care unit admission and assisted ventilation. Conclusion The overall prognosis was good since only one patient has passed away, while all others recovered and, subsequently, were discharged. Manifestations, laboratory investigations, and management modalities should be utilized promptly to enhance the prognosis and obtain better outcomes.