Risk factors for chickenpox incidence in Taiwan from a large‐scale computerized database

Wu, Po Yuan; Li, Yu-Chuan; Wu, Hanwei

doi:10.1111/j.1365-4632.2006.03050.x

Cited by 25 publications

(19 citation statements)

References 16 publications

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“…But, with the exception of a limited number of studies [10]–[13], this increased susceptibility has been infrequently described in terms of sex and age as in the present study. In fact, some studies report no differences by sex for some diseases [15]–[18], for which significant differences were observed in this study.…”

Section: Discussioncontrasting

confidence: 64%

“…Similar male predominance early in life and reversal at later ages were observed in human T-cell leukemia virus type I (HTLV-I) infection from blood donor data [11]. Thomas and Hall described age-specific sex-related differences in the morbidity of herpes zoster in the US [12], while Wu showed the annual incidence rates of chickenpox by age-group and sex, as well as the relative risks between sexes, using a large-scale database in Taiwan [13].…”

Section: Introductionmentioning

confidence: 99%

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Age-Specific Sex-Related Differences in Infections: A Statistical Analysis of National Surveillance Data in Japan

Eshima

Tokumaru

Hara³

et al. 2012

PLoS ONE

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BackgroundTo prevent and control infectious diseases, it is important to understand how sex and age influence morbidity rates, but consistent clear descriptions of differences in the reported incidence of infectious diseases in terms of sex and age are sparse.Methods and FindingsData from the Japanese surveillance system for infectious diseases from 2000 to 2009 were used in the analysis of seven viral and four bacterial infectious diseases with relatively large impact on the Japanese community. The male-to-female morbidity (MFM) ratios in different age groups were estimated to compare incidence rates of symptomatic reported infection between the sexes at different ages. MFM ratios were >1 for five viral infections out of seven in childhood, i.e. male children were more frequently reported as infected than females with pharyngoconjunctival fever, herpangina, hand-foot-and-mouth disease, mumps, and varicella. More males were also reported to be infected with erythema infectiosum and exanthema subitum, but only in children 1 year of age. By contrast, in adulthood the MFM ratios decreased to <1 for all of the viral infections above except varicella, i.e. adult women were more frequently reported to be infected than men. Sex- and age-related differences in reported morbidity were also documented for bacterial infections. Reported morbidity for enterohemorrhagic Escherichia coli infection was higher in adult females and females were reportedly more infected with mycoplasma pneumonia than males in all age groups up to 70 years.ConclusionsSex-related differences in reported morbidity for viral and bacterial infections were documented among different age groups. Changes in MFM ratios with age may reflect differences between the sexes in underlying development processes, including those affecting the immune, endocrine, and reproductive systems, or differences in reporting rates.

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Section: Discussioncontrasting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Age-Specific Sex-Related Differences in Infections: A Statistical Analysis of National Surveillance Data in Japan

Eshima

Tokumaru

Hara³

et al. 2012

PLoS ONE

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“…However, other factors such as population density, nursery attendance and socioeconomic development also may influence the epidemiology of VZV in areas where universal vaccination has not yet been implemented [16]. To date, the association between the epidemiological trends in varicella infection and climatic factors (temperature, rainfall, humidity) has mainly been studied in tropical regions [12], [17]–[19]. Nowadays, while environmental factors are modified in temperate regions secondary to the ozone phenomenon, the investigation of a possible association with epidemiologic changes in varicella incidence may be vital for designing related evidence-based public health prevention strategies [20].…”

Section: Introductionmentioning

confidence: 99%

Time Trends in Pediatric Hospitalizations for Varicella Infection Are Associated with Climatic Changes: A 22-Year Retrospective Study in a Tertiary Greek Referral Center

et al. 2012

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Background/AimsThe transmission rate of air-borne infectious diseases may vary secondary to climate conditions. The study assessed time trends in the seasonality of hospitalized varicella cases in a temperate region in relation to climatic parameters prior to the implementation of universal varicella immunization.MethodsA retrospective descriptive study was conducted among all pediatric and adolescent varicella patients (n = 2366) hospitalized at the “Aghia Sophia” Children's Hospital during 1982–2003 in Athens, Greece. Date of infection was computed based on hospital admission date. Seasonal and monthly trends in the epidemiology of varicella infection were assessed with time series analysis (ARIMA modeling procedure). The correlation between the frequency of varicella patients and the meteorological parameters was examined by the application of Generalized Linear Models with Gamma distribution.ResultsDuring 1982–2003, the occurrence of hospitalized varicella cases increased during summer (p = 0.025) and decreased during autumn (p = 0.021), and particularly in September (p = 0.003). The frequency of hospitalized varicella cases was inversely associated with air temperature (p<0.001). In contrast, the occurrence of hospitalized varicella cases was positively associated with wind speed (p = 0.009).ConclusionsPediatric hospitalizations for varicella infection rates have increased during summer and decreased during autumn in the examined temperate region. Time trends in hospitalized varicella cases are associated with climatic variables.

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“…Sin embargo, en la ciudad de Lima, la trasmisión de la varicela parecería relacionada al aspecto climatológico, especialmente la temperatura; similares conclusiones podemos encontrar en estudios realizados en Japón y Taiwán (17,18) .…”

Section: Resultsunclassified

Variabilidad estacional de hospitalizaciones por varicela en el INSN, Lima-Perú

et al. 2013

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ResumenObjetivo: Determinar las variabilidad estacional de hospitalizaciones por varicela. Diseño: Serie de casos. Institución: Instituto Nacional de Salud del Niño (INSN) del Perú. Participantes: Niños hospitalizados por varicela. Intervenciones: Se estudió las hospitalizaciones por varicela de niños atendidos en el INSN del Perú desde el año 2001 hasta el 2011, país sin implementación de la vacunación contra la varicela; se identificó a los pacientes de la oficina de estadística. Principales medidas de resultados: Variabilidad estacional de hospitalizaciones de los niños atendidos por varicela. Resultados: Se estudió a 1 566 niños hospitalizados por varicela, siendo la mediana de edad de 2 años 6 meses, 46,4% (727/1 466) de sexo femenino, mediana de estancia hospitalaria seis días (RIQ:9,4). El grupo etario más afectado fue de 0 a 2 años, correspondiendo al 55% (864/1 566). En la curva de frecuencias de hospitalizaciones por varicela por meses evidenciamos la distribución estacional, con una tendencia al incremento cada vez mayor por año. Las hospitalizaciones por varicelas con al menos alguna complicación correspondieron a 68,5%(1 073/1 566). El porcentaje de fallecidos fue 0,83% (13/1 493). Conclusiones: Las hospitalizaciones por varicela en el INSN es una causa importante de morbilidad, con una tendencia estacional, siendo más frecuente en los meses de noviembre a febrero, con el incremento cada vez mayor por año y supone una importante carga económica. We studied 1 566 children hospitalized for chickenpox, with mean age 2 years 6 months; 46.4% (727/1 466) were female, median hospital stay was 6 days (IQR: 9.4). The most affected group was 0 to 2 years corresponding to 55% (864/1 566). There was seasonal distribution in months' frequency with annual increasing trend. Cases of chickenpox with some complication were 68.5% (1 073/1 566), and 0.83% (13/1 493) died. Conclusions: Hospitalizations for chickenpox in the INSN is a major cause of morbidity, with seasonal trend, more frequent from November to February, with tendency to annual increase; it represents a significant economic burden.

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Risk factors for chickenpox incidence in Taiwan from a large‐scale computerized database

Cited by 25 publications

References 16 publications

Age-Specific Sex-Related Differences in Infections: A Statistical Analysis of National Surveillance Data in Japan

Age-Specific Sex-Related Differences in Infections: A Statistical Analysis of National Surveillance Data in Japan

Time Trends in Pediatric Hospitalizations for Varicella Infection Are Associated with Climatic Changes: A 22-Year Retrospective Study in a Tertiary Greek Referral Center

Variabilidad estacional de hospitalizaciones por varicela en el INSN, Lima-Perú

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