RESUMO
Objective To investigate the epidemiological characteristics of COVID-19 outbreaks in Xiangyang, and to provide a scientific basis for curbing the development of the epidemic. Methods A retrospective epidemiological investigation was conducted to analyze the epidemiological characteristics of confirmed COVID-19 cases in the city from January 1 to April 30, 2020. Results Confirmed COVID-19 cases were reported throughout the city, and the epidemic situation decreased significantly after February. The median age of confirmed cases was 47 years old, and most of them were 25-65 years old (86.89%). The average interval time between first diagnosis and admission was 5.23 days, while the average interval time between diagnosis and confirmation was 1.69 days. As time went on, the time intervals between the first diagnosis and admission and between diagnosis and confirmation were significantly shortened. The higher the proportion of previous underlying diseases was, the more serious the COVID-19 infection was (χ2=44.40, P<0.05). Conclusion The infection of COVID-19 in Xiangyang is highly contagious, but the cluster epidemic was mainly mild. Novel coronavirus infection is closely related to occupational exposure, with young and middle-aged people being high-risk populations. Early diagnosis, early isolation, comprehensive treatment and active control of chronic underlying diseases are crucial to the control of COVID-19.
RESUMO
Objective To analyze the monitoring data of the fever clinic during the epidemic period of COVID-19 in Xiangyang City, and to provide a scientific basis for the government to carry out the prevention and control of new coronavirus pneumonia in the next step. Methods Monitoring data from the "Symptom Monitoring System of Fever Outpatients in Xiangyang City" from February 11, 2020 to March 16, 2020 was obtained. The data combined with the confirmed cases was statistically analyzed. Results A total of 28 296 outpatients with fever were monitored and 38 confirmed cases were found. According to trend chi square test, the visit rate of the fever clinic (Z =629.11，P = 0.000＜0.005 ) decreased gradually from the second week. The analysis of the rate of the fever clinic visits (χ2=2819.54，P=0.000＜0.05 ) and the rate of confirmed cases in different areas ( χ2=7.80，P=0.005＜0.05) indicated that the diagnostic confirmation rate in the urban area was higher, while the rate of visits in counties was higher. The rate of visits to fever clinics (Z=2 261.99, P=0.000<0.008) and the rate of diagnostic confirmation (Z=10.69, P=0.001<0.008) in different age groups showed that the visit rate decreased with the increase of age, while the diagnostic confirmation rate increased with the increase of age. Conclusion The prevention and control of the new coronavirus in Xiangyang City had been effective. It is important to strengthen the screening of patients in fever clinics in key areas (urban areas) and key age groups (children and adolescents) in the next step.
RESUMO
Objective To establish normal range of components of cord blood cells in healthy fetuses from 19 to 37 weeks' gestation and to provide proof for diagnosis of hematological disorders in prenatal fetuses and premature infants.Methods Twelve hematological parameters were determined in 182 fetuses using Coulter GENS system 2 full automated blood cell counter,and the blood cells were classified by microscope.Results The number of white blood cell(WBC) was increased gradually from 3.58?10~9/L to 5.76?10~9/L with the gestational weeks increasing from 19 to 37 weeks.The differential counts indicated that the lymphocytes represented the main population.The number of lymphocytes and normoblast was decreased gradually and that of neutrophils was increased gradually.The numbers of monocytes,eosinophils and basophils remained stable as the increasing of gestational weeks.The red blood cell(RBC),hemoglobin(HGB) and hematocrit(HCT) were increased gradually but mean corpuscular volume(MCV) was decreased.The differences between mean corpuscular hemoglobin(MCH),platelet volume distribution width(PDW),mean platelet volume(MPV),plateletcrit(PCT) and mean corpuscular hemoglobin concentration(MCHC) were not significant among different fetuses' ages.Conclusion The components of cord blood cells in healthy fetuses are dynamic and the establishment normal range of components of cord blood cells in healthy fetuses is helpful to diagnose the disorders in prenatal fetuses and premature infants.