OBJECTIVES: To investigate the clinical characteristics of children infected with the Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Chengdu of China. METHODS: A retrospective analysis was conducted for the clinical data of 226 children who were infected with the Omicron variant of SARS-Cov-2 and were isolated and treated in Chengdu Shelter Hospital from August 28 to September 21, 2022. According to the presence or absence of clinical symptoms, they were divided into two groups: asymptomatic group and mild symptomatic group. The two groups were compared in terms of clinical characteristics, diagnosis and treatment, and prognosis. RESULTS: Among the 226 children infected with the Omicron variant, 71 (31.4%) were asymptomatic and 155 (68.6%) had mild symptoms. Fever and cough were the most common clinical symptoms, with fever in 95 children (61.3%) and cough in 92 children (59.4%). Of all 226 children, 188 (83.2%) received coronavirus disease 2019 (COVID-19) vaccination. The time to nucleic acid clearance ranged from 6 to 26 days, with a nucleic acid clearance rate of 58.0% (131/226). There were no significant differences among different age groups in sex, early symptoms, clinical typing, nucleic acid re-positive rate, nucleic acid clearance rate, and length of hospital stay (P>0.05). There were no significant differences between the asymptomatic and mild symptomatic groups in age, sex, underlying diseases, COVID-19 vaccination, use of Lianhua Qingwen granules, nucleic acid clearance rate, nucleic acid re-positive rate, and length of hospital stay (P>0.05). CONCLUSIONS Children infected with the Omicron variant of SARS-Cov-2 in Chengdu generally have mild clinical symptoms, mainly upper respiratory tract infection, which has little threat to the health of children of different ages, and children tend to have a good overall prognosis.
Humans ; Child ; COVID-19 ; COVID-19 Vaccines ; Cough/etiology* ; Retrospective Studies ; SARS-CoV-2 ; China/epidemiology* ; Fever/etiology* ; Nucleic Acids

The clinical findings of fever and skin rash with or without evidence of fluid retention, which mimic engraftment syndrome, have been observed during the pre-engraftment period in patients undergoing hematopoietic stem cell transplantation. In order to characterize this newly observed clinical syndrome called pre-engraftment syndrome (pES), we retrospectively analyzed the clinical records of 50 patients. Three out of 14 patients (23.1%) who underwent cord blood stem cell transplantation developed non-infectious fever, skin rash, and tachypnea 4-15 days prior to neutrophil engraftment. Two patients spontaneously recovered with fluid restriction and oxygen inhalation. One patient died of a complicated pulmonary hemorrhage in spite of aggressive supportive therapy and steroid treatment. Four out of 23 patients (17.4%) who underwent allogeneic bone marrow transplantation developed non-infectious fever and skin rash 4 to 5 days prior to neutrophil engraftment. All four of these patients recovered with only steroid treatment. These characteristic findings were not observed in patients who had undergone autologous peripheral blood stem cell transplantation. Interestingly, the speed of neutrophil engraftment was significantly faster for the patients suffering from pre-engraftment syndrome. The close observation and further pathophysiological research are required to better understand this syndrome.
Adolescent ; Child ; Child, Preschool ; Exanthema/epidemiology/*etiology ; Female ; Fever/epidemiology/*etiology ; Hematopoietic Stem Cell Transplantation/*adverse effects ; Humans ; Incidence ; Infant ; Male ; Retrospective Studies ; Risk Factors ; Syndrome

INTRODUCTIONFebrile neutropenia (FN) is a significant cause of mortality and morbidity in oncology and haematology units worldwide. The overall mortality in hospital surveys in Singapore surveys on post-chemotherapy FN has ranged between 3.0% and 8.8%. However, recent evidence indicates that outpatient management of patients with low-risk FN is safe and cost-effective.

MATERIALS AND METHODSWe conducted a prospective audit on a cohort of adult patients with post-chemotherapy FN seen at 2 local public sector cancer centres over a 1-year period in order to define their epidemiological characteristics and outcomes, and also to assess the uptake of early discharge/outpatient management strategies for these patients.

RESULTSWe reviewed 306 FN episodes from 248 patients. Patient characteristics and outcomes were similar between both institutions. Eleven (3.7%) FN episodes were managed as outpatient and none developed complications. Overall 30-day mortality was 6.6%, while the median length of stay (LOS) was 7 days (IQR: 4 to 11 days). The only independent risk factor for mortality was severe sepsis (OR:13.19; 95% CI: 1.98 to 87.7; P = 0.008). Factors independently associated with a longer LOS were vancomycin prescription (coefficient: 0.25; 95% CI: 0.08 to 0.41; P = 0.003), longer duration of intravenous antibiotics (coefficient: 0.08; 95% CI: 0.06 to 0.10; P <0.001), and prior review by an infectious diseases physician (coefficient: 0.16; 95% CI: 0.01 to 0.31; P = 0.034).

CONCLUSIONThis audit demonstrated that mortality from FN in our 2 cancer centres is low and comparable to international institutions. It also demonstrates that outpatient management of FN is safe in selected patients, and can be further expanded for right-siting of resources.

Adult ; Anti-Bacterial Agents ; therapeutic use ; Antineoplastic Agents ; adverse effects ; Bacterial Infections ; epidemiology ; Cohort Studies ; Female ; Fever ; epidemiology ; etiology ; Humans ; Male ; Middle Aged ; Mycoses ; epidemiology ; Neoplasms ; complications ; drug therapy ; Neutropenia ; epidemiology ; etiology ; Prospective Studies ; Singapore ; epidemiology

1793 Yellow fever in Philadelphia was the most severe epidemics in the late 18th century in the United States. More than 10% of the population in the city died and many people fled to other cities. The cause of yellow fever in the United States had close relationship with slaves and sugar in Philadelphia. Sugarcane plantation had needed many labors to produce sugar and lots of Africans had to move to America as slaves. In this process, Aedes aegypti, the vector of yellow fever had migrated to America and the circumstances of ships or cities provided appropriate conditions for its breeding. In this period, the cause of yellow fever could not be established exactly, so suggestions of doctors became entangled in political and intellectual discourses in American society. There was a critical conflict between Jeffersonian Republicanism and Federalism about the origin and treatment of yellow fever. Benjamin Rush, a Jeffersonian Republican, suggested urban sanitation reform and bloodletting. He believed the infectious disease happened because of unsanitary city condition, so he thought the United States could be a healthy nation by improvement of the public health and sanitation. He would like to cope with national crisis and develop American society on the basis of republicanism. While Rush suggested the improvement of public health and sanitation, the city government of Philadelphia suggested isolation of yellow fever patients and quarantine. City government isolated the patients from healthy people and it reconstructed space of hospital. Also, it built orphanages to take care of children who lost their parents during the epidemic and implemented power to control people put in the state of exception. Of course, city government tried to protect the city and nation by quarantine of every ship to Philadelphia. Control policies of yellow fever in 1793 showed different conflicts and interactions. Through the yellow fever, Jeffersonian Republicanism and Federalism had conflicted in politically, but they had interactions for control of the infectious disease. And with these kinds of infectious diseases policies, we can see interactions in local, national and global level.
Government Regulation/*history ; Health Policy/*history ; History, 18th Century ; Humans ; Philadelphia ; *Politics ; Yellow Fever/epidemiology/etiology/*history/*prevention & control

OBJECTIVES: To study the clinical features of children with coronavirus disease 2019 (COVID-19) caused by Delta variant infection in different ages groups. METHODS: A total of 45 children with COVID-19 caused by Delta variant infection who were hospitalized in the designated hospital in Henan Province, China, from November 17 to December 17, 2021, were included. They were divided into three groups: <6 years group (n=16), 6-13 years group (n=16), and >13 years group (n=13). The three groups were compared in clinical features and laboratory examination data. RESULTS: COVID-19 in all age groups was mainly mild. Main manifestations included cough and expectoration in the three groups, and fever was only observed in the 6-13 years group. The <6 years group had significantly higher serum levels of aspartate aminotransferase, lactate dehydrogenase, and creatine kinase isoenzymes than the other two groups (P<0.05). The 6-13 years group had the highest proportion of children with elevated serum creatinine levels (50%). Among the three groups, only 4 children in the >13 years group had an increase in serum C-reactive protein levels. The 6-13 years group had the lowest counts of CD3⁺CD4⁺ lymphocytes, CD3⁺CD8⁺ lymphocytes, and natural killer cells in the peripheral blood among the three groups. The >13 years group had a significantly higher positive rate of SARS-CoV-2 IgG on admission than the other two groups (P<0.05). There was no significant difference in the imaging findings on chest CT among the three groups (P>0.05). CONCLUSIONS The clinical features of COVID-19 caused by Delta variant infection in children of different age groups may be different: children aged <6 years tend to develop myocardial injury, and those aged 6-13 years have fever except cough and expectoration and tend to develop renal and immune dysfunction.
Humans ; Child ; COVID-19 ; SARS-CoV-2 ; Cough/etiology* ; Killer Cells, Natural ; China/epidemiology* ; Fever ; Retrospective Studies

OBJECTIVETo determine the incidence, course, potential risk factors, and outcomes of noninfectious fever developed in patients after aortic surgery.

METHODSpatients who received operation for aortic aneurysm or dissection in our center from January 2006 to January 2008 were reviewed. Patients who met one of the following criteria were excluded: having a known source of infection during hospitalization; having a preoperative oral temperature greater than or equal to 38.0 degrees C; undertaking emergency surgery; having incomplete data. Univariate analysis was performed in patients with noninfectious postoperative fever and those without, with respect to demographics, intraoperative data, etc. Risk factors for postoperative fever were considered for the multivariate logistic regression model if they had a P value less than 0.10 in the univariate analysis.

RESULTSTotally 463 patients undergoing aortic surgery were enrolled for full review. Among them, 345 (74.5%) patients had noninfectious postoperative fever, the other 118 (25.5%) patients didn't develop postoperative fever. Univariate analysis demonstrated that several risk factors were associated with the development of noninfectious postoperative fever, including weight, surgical procedure, minimum intraoperative bladder temperature, temperature upon intensive care unit (ICU) admission, discharge, and during ICU stay, as well as blood transfusion. In a further multivariate analysis, surgical site of thoracic and thoracoabdominal aorta (odds ratio: 4.861; 95% confidence interval: 3.029-5.801; P=0.004), lower minimum intraoperative bladder temperature (odds ratio: 1.117; 95% confidence interval: 1.01-1.24; P=0.04), and higher temperature on admission to the ICU (odds ratio: 2.57; 95% confidence interval: 1.28-5.18; P=0.008) were found to be significant predictors for noninfectious postoperative fever. No difference was found between the febrile and afebrile patients with regard to postoperative hospitalization duration (P=0.558) or total medical costs (P=0.896).

CONCLUSIONNoninfectious postoperative fever following aortic surgery is very common and closely related with perioperative interventions.

Adult ; Aged ; Aneurysm, Dissecting ; surgery ; Aortic Aneurysm ; surgery ; Female ; Fever ; diagnosis ; epidemiology ; etiology ; Humans ; Incidence ; Interleukin-6 ; blood ; Male ; Middle Aged ; Postoperative Complications ; epidemiology ; etiology ; Risk Factors ; Transfusion Reaction

OBJECTIVETo explore the effect of phlegm-heat syndrome on the degree of neurological deficit and provide some data support for the correct recognition of the relationship between phlegm-heat syndrome and neurological deficits in stroke patients.

METHODSClinical information were collected on 294 patients with acute ischemic stroke (AIS) whose syndrome and National Institute of Health stroke scale (NIHSS) score were checked at baseline (within the first 3-day admission) and at 7, 14, 28, and 90 days after admission to our clinical research centre. We explored the effect of phlegm-heat syndrome on the degree of neurological deficit following stroke by applying a repeated measures analysis of variance.

RESULTSStroke patients with phlegm-heat syndrome had higher NIHSS score than patients without the syndrome (P <0.01), and there appeared to be a decrease in NIHSS score over time in all patients (P <0.01).

CONCLUSIONSPhlegm-heat syndrome in patients who have suffered stroke has an effect on the degree of neurological deficiency. Disappearance of phlegm-heat syndrome may improve the degree of neurological deficit observed in stroke patients.

Adult ; Aged ; Aged, 80 and over ; Analysis of Variance ; Diagnosis, Differential ; Fever ; complications ; diagnosis ; epidemiology ; Humans ; Medicine, Chinese Traditional ; Middle Aged ; Nervous System Diseases ; diagnosis ; epidemiology ; etiology ; Research Design ; Stroke ; complications ; diagnosis ; epidemiology ; Syndrome

OBJECTIVETo review the epidemiologic and clinical characteristics of 96 cases with novel H1N1 influenza A, and improve the diagnosis and treatment level of novel H1N1 influenza A.

METHODS96 cases of novel H1N1 influenza A admitted to the isolation wards from Oct 20 to Sep 23, 2009 were studied. Their epidemiologic, clinical, laboratory, and radiologic characteristics were analyzed.

RESULTSThe median age of the 96 patients was 26.52 +/- 10.62 years (range, 5 to 60 years). Sixty-four of the 96 patients had a close contact with novel H1N1 influenza A patients. The main symptoms included fever 100%, cough 86.4% , sore throat 66.6% and myalgia 32.3%.

CONCLUSIONThe clinical presentation of novel H1N1 infection is largely indistinguishable from that of seasonal influenza. Combines both a symptom complex with the epidemiological investigation and laboratory characteristics can improve the accuracy of diagnosis of novel H1N1 influenza A.

Adolescent ; Adult ; Child ; Cough ; etiology ; Disease Outbreaks ; Female ; Fever ; etiology ; Humans ; Influenza A Virus, H1N1 Subtype ; genetics ; isolation & purification ; Influenza A virus ; immunology ; Influenza Vaccines ; immunology ; Influenza, Human ; epidemiology ; physiopathology ; Male ; Middle Aged ; Pharyngitis ; etiology ; Research Design ; Young Adult

OBJECTIVETo compare the clinical features and co-infection between pneumonia caused by influenza virus A (IVA) and pneumonia caused by influenza virus B (IVB) among children.

METHODSA total of 165 children with pneumonia caused by influenza virus (IV) were included in the study. These subjects were divided into IVA(n=71) and IVB pneumonia groups (n=94) according to the subtypes of IV. The IVA pneumonia group was further divided into simple infection (n=14) and co-infection subgroups (n=57), and the IVB pneumonia group was also further divided into simple infection (n=27) and co-infection subgroups (n=67). Co-infection rate and pathogen spectrum were analysed in children with IV pneumonia.

RESULTSThe IVB pneumonia group had significantly increased mean age of onset and significantly prolonged mean duration of fever compared with the IVA pneumonia group (P<0.05). Co-infection rate among children with IV pneumonia was 75.2%, who were co-infected with bacteria (44.2%), Mycoplasma pneumoniae (MP, 21.8%) and other viruses (45.5%). Respiratory syncytial virus (RSV) was most common in children co-infected viruses (89% ). The rate of co-infection with RSV was significantly higher in the IVA pneumonia group than in the IVB pneumonia group. There were no significant differences in age, length of hospital stay, duration of fever, percentage of neutrophils, prealbumin, C-reactive protein, alanine aminotransferase, and creatine kinase-MB between the simple infection and co-infection subgroups of each group.

CONCLUSIONSChildren with IVB pneumonia have prolonged duration of fever and increased age of onset compared with those with IVA pneumonia. Co-infection rate is high among children with IV pneumonia, who may be co-infected with bacteria, viruses and MP. Co-infection with RSV is more common in children with IVA pneumonia. It is difficult to identify the presense of co-infection using clinical indices.

Age of Onset ; Child ; Child, Preschool ; Coinfection ; epidemiology ; Female ; Fever ; etiology ; Humans ; Influenza A virus ; Influenza B virus ; Influenza, Human ; virology ; Male ; Pneumonia, Viral ; virology

With our rapidly ageing population and advancing treatments for patients with haematological, oncologic and rheumatological diseases, there are increasing numbers of immunocompromised patients presenting to primary care and general hospitals with opportunistic infections. This review considers the trends of these infections across four representative subgroups: fungal infections following haematopoietic stem cell transplant; viral infections post solid organ transplant; mycobacterial infections during treatment with targeted biological agents; and bacterial infections as a cause of fever in neutropenia. We also consider the impact of host, pathogens, environments and treatments on the epidemiology and outcomes of these infections.
Adult ; Bacterial Infections ; complications ; Communicable Diseases ; etiology ; Female ; Fever ; etiology ; Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Immunocompromised Host ; Immunosuppressive Agents ; adverse effects ; Male ; Middle Aged ; Mycoses ; etiology ; Neutropenia ; etiology ; Opportunistic Infections ; epidemiology ; etiology ; Organ Transplantation ; adverse effects ; Virus Diseases ; etiology