BackgroundAlthough the number of patients and incidence rate of Kawasaki disease (KD) are increasing in Japan, the most recent epidemiologic features of KD are not known.MethodsThe 21st nationwide survey of KD was conducted in 2011 and included patients treated for the disease in 2009 and 2010. Hospitals specializing in pediatrics, and hospitals with a total of 100 or more beds and a pediatric department, were asked to report all patients with KD during the 2 survey years.ResultsA total of 1445 departments and hospitals reported 23 730 KD patients (10 975 in 2009 and 12 755 in 2010): 13 515 boys and 10 215 girls. The annual incidence rates were 206.2 and 239.6 per 100 000 children aged 0 to 4 years in 2009 and 2010, respectively; the 2010 rate was the highest ever reported in Japan. Monthly number of patients peaked during winter to spring months; lower peaks were noted during summer months. However, the seasonal patterns in 2009 and 2010 differed from those of previous years. The age-specific incidence rate had a monomodal distribution, with a peak during the latter half of the year of birth. The prevalences of cardiac lesions during acute KD and cardiac sequelae were higher among infants and older age groups. Despite a decrease in prevalence, the proportion of patients with giant coronary aneurysms—the most severe sequela of KD—did not substantially decrease.ConclusionsThe incidence rate and number of patients with KD continue to increase in Japan.
Metabolic syndrome was prevalent in women compared with men among Mongolian adults. Preventive strategies aimed at men with a higher alcohol consumption and women with widowed status may help reduce metabolic syndrome, thereby improving cardiovascular health conditions in Mongolia.
Ischemic heart disease (IHD) remains one of the most important disorders associated with disability and mortality worldwide, and is one of the major causes of cardiovascular diseases in Mongolia. The objective of the current study was to determine the prevalence of IHD and its related factors in a general population in Mongolia. We conducted a nationwide cross-sectional survey between March and September, 2009. General participants were recruited from urban to rural regions in a multistage random cluster sampling method. The diagnosis of IHD was based on the Rose questionnaire (World Health Organization) and electrocardiographic findings. A total of 369 (16.2 %) subjects with IHD were diagnosed among 2,280 participants. The prevalence of subjects with IHD was significantly increased by age: from 9.9 % in individuals age 40-44 years compared to 17.7 % in those over 60 years. Smoking habits (former and current) and non-frequent intake of fruits and vegetables were significantly positively associated with IHD in men, while heavy alcohol drinking habits and lower education period of time were significantly positively associated with IHD in women. IHD was found to be prevalent, especially among people aged over 40 years, in Mongolia. Statistical factors related to IHD were found to be significantly different based on sex. The current data may provide relevant information to prevent IHD in the Mongolian population.
To compare the epidemiologic profiles of hepatitis A virus (HAV) and hepatitis E virus (HEV) infections in children in Mongolia, the prevalence of HAV and HEV infections was studied serologically and molecularly among 520 apparently healthy children 7-12 years of age (mean +/- standard deviation, 8.5 +/- 0.8 years) using serum samples obtained in 2004. Total antibody against HAV (anti-HAV) was detected in 438 children (84.2%), whereas IgG antibody against HEV (anti-HEV IgG) was detected in only three subjects (0.6%). All three subjects with anti-HEV IgG were negative for anti-HEV IgM and HEV RNA. The presence of HAV RNA was tested in all 520 subjects, and one child (9-year-old girl) was found to have detectable HAV RNA (subgenotype IA). In conclusion, HEV infection was uncommon, but subclinical HAV infection was highly prevalent among children in Mongolia.
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