Zoster In Children Research Articles

Lymphocyte counts predict optimal timing of chemotherapy reinitiation after antivirus treatment for herpes zoster in children with leukemia.

Herpes zoster (HZ) is rare in healthy children, but more prevalent in those with leukemia. Optimal timing of chemotherapy reinitiation after HZ treatment is challenging because chemotherapy suppresses immunity and increases risk of HZ relapse. We aimed to optimize the timing of chemotherapy reinitiation after HZ therapy in children with leukemia. The study included 31 children with acute leukemia and HZ infection. General information, clinical symptoms, laboratory test results, duration of HZ treatment, and prognosis were compared with those of children with leukemia alone. Correlation analysis was performed for 20 children who restarted chemotherapy after HZ treatment. Of 31 children with leukemia and HZ, 67.74% had lesions at multiple sites. The median time from chemotherapy initiation to HZ onset was 14.1 (1.5-29.5) months. Among 27 children included in the follow-up, there was one case of HZ relapse. After excluding children who did not continue chemotherapy after HZ treatment, the median interval between completion of HZ therapy and chemotherapy reinitiation in the remaining 20 children was 8.00 (-3 to 27) days. Lymphocyte counts (LY#) on restarting chemotherapy correlated inversely with HZ lesion healing time (p < 0.05). LY# at the time of HZ onset were lower than those pre- and post-onset, and lower than those in the control group (p < 0.05). In conclusion, children with leukemia have a good HZ prognosis, but an increased risk of HZ recurrence. LY# at the time of chemotherapy reinitiation may be a useful indicator for selecting the optimal interval between antiviral therapy completion and chemotherapy reinitiation.

Reflectance confocal microscopy as a diagnostic tool for herpes zoster in children.

Reflectance confocal microscopy as a diagnostic tool for herpes zoster in children.

The Association between Varicella Vaccination and Herpes Zoster in Children: A Semi-National Retrospective Study.

Varicella vaccination in children has been performed worldwide in recent years. Despite established effectiveness, many countries still do not routinely vaccinate children against varicella, probably due to concerns about complications, such as herpes zoster infection. We aimed to compare the herpes zoster incidence in children before and after implementing the mandatory varicella vaccine in Israel in 2008. As a secondary aim, we characterized several parameters, including age, sex, and ethnic sector among herpes zoster cases, and we evaluated the complication rate to identify data relevant to the immunization status of the pediatric population. A retrospective study was conducted between 2000 and 2021, including patients aged 0-18 years old in a large cohort in southern Israel. A time series analysis and complication rates evaluations were performed in the pre- and post-vaccination eras. A total of 109.24 herpes zoster cases per 100,000 population per year were diagnosed between 2000 and 2007 (pre-vaccination era), compared to 354.71 herpes zoster cases per 100,000 population per year diagnosed between 2008 and 2021 (post-vaccination era) (p < 0.001). No change in the complication rate was documented. Thus, we concluded that there is an association between the varicella vaccine implementation program and the increase in the rate of herpes-zoster occurrence without a concurrent negative contribution to herpes zoster-related morbidity.

Impacts of routine varicella vaccination program and COVID-19 pandemic on varicella and herpes zoster incidence and health resource use among children in Japan

PurposeTo determine the epidemiological trends in pediatric varicella and herpes zoster incidence and changes in healthcare resource use from 2005 to 2022 using a nationally representative database in Japan. Materials and methodsWe conducted a retrospective observational study consisting of 3.5 million children with 177 million person-months during 2005–2022 using Japan Medical Data Center (JMDC) claims database in Japan. We investigated trends in incidence rates of varicella and herpes zoster and changes in healthcare resource use (e.g., antiviral use, office visits, and healthcare costs) over 18 years. Interrupted time-series analyses were used to investigate the impact of the routine varicella vaccination program in 2014 and infection prevention measures against COVID-19 on incidence rates of varicella and herpes zoster and related healthcare utilization. ResultsAfter the introduction of the routine immunization program in 2014, we observed level changes in incidence rates (45.6 % reduction [95 %CI, 32.9–56.0] of varicella cases, antiviral use (40.9 % reduction [95 %CI, 25.1–53.3]), and relevant healthcare costs (48.7 % reduction [95 %CI, 38.2–57.3]). Furthermore, infection prevention measures against COVID-19 were associated with additional level changes in varicella rates (57.2 % reduction [95 %CI, 44.5–67.1]), antiviral use (65.7 % reduction [59.7–70.8]), and healthcare costs (49.1 % [95 %CI, 32.7–61.6]). In contrast, the changes in incidence and healthcare costs for herpes zoster were relatively small, which showed 9.4 % elevated level change with a decreasing trend and 8.7 % reduced level change with a decreasing trend after the vaccine program and the COVID-19 pandemic. The cumulative incidence of herpes zoster in children born after 2014 was lower than that before 2014. ConclusionsVaricella incidence and healthcare resource use were largely affected by the routine immunization program and infection prevention measures against COVID-19, while these impacts on herpes zoster were relatively small. Our study indicates that immunization and infection prevention measures largely changed pediatric infectious disease practices.

Herpes zoster in children during the COVID-19 pandemic in France: A retrospective multicenter observational study

Herpes zoster in children during the COVID-19 pandemic in France: A retrospective multicenter observational study

Herpes Zoster in Children; Should the Varicella Vaccine be Administered as a Single Dose or a Double Dose?

Herpes Zoster in Children; Should the Varicella Vaccine be Administered as a Single Dose or a Double Dose?

Herpes Zoster about 14-Month-Old Immunocompetent Infant

Herpes zoster in children is a rare but often mild disease requiring only symptomatic treatment. Antivirals are exceptionally used for complicated forms, for ophthalmic localization or for immunocompromised patients. For the infant, it is most often an in utero contamination during a maternal chickenpox. We report a rare case of HZ in an immunocompetent 14-month-old infant with no history of chickenpox or its exposure in babies, other siblings, and the mother during or after pregnancy.

Ophthalmic Zoster, A Rare Pathology in a Child

Herpes zoster in children is rare and particularly the ophthalmic form, which can be responsible for serious ocular complications. We report the case of a 6-year-old female patient with herpes zoster ophthalmicus. The patient was 6 years old and hospitalised with a painful rash. The examination revealed an infectious syndrome, a painful vesicular rash, in a cluster, resting on an erythematous background located on the forehead and the root of the nose with eyelid edema. Slit lamp examination came back normal. The diagnosis of herpes zoster ophthalmicus was made on the basis of clinical findings. The course was favourable on acyclovir with no ocular complications and no post-herpetic pain.

Ophthalmic Zoster, A Rare Pathology in a Child

Herpes zoster in children is rare and particularly the ophthalmic form, which can be responsible for serious ocular complications. We report the case of a 6-year-old female patient with herpes zoster ophthalmicus. The patient was 6 years old and hospitalised with a painful rash. The examination revealed an infectious syndrome, a painful vesicular rash, in a cluster, resting on an erythematous background located on the forehead and the root of the nose with eyelid edema. Slit lamp examination came back normal. The diagnosis of herpes zoster ophthalmicus was made on the basis of clinical findings. The course was favourable on acyclovir with no ocular complications and no post-herpetic pain.

Effect of the varicella vaccination implementation on the development of herpes zoster in children and adolescents.

Herpes zoster (HZ) is an infectious disease caused by latent varicella-zoster virus reactivation. There are conflicting reports on the varicella vaccine's effect on the incidence of HZ in children and adolescents. This study aimed to determine the impact of the single dose of varicella vaccination on HZ prevalence during childhood and adolescence. The study included children and adolescents aged <18 years who presented to the dermatology outpatient clinic between 2005 and 2019 and were diagnosed with HZ. Considering that the universal vaccination program started to be implemented in Turkey in 2013, non-vaccinated cases in the prevaccination period, vaccinated cases in the postvaccination period, and non-vaccinated patients in the postvaccination period were compared in terms of HZ prevalence and demographic features. After the initiation of the varicella vaccination program, the prevalence of HZ was found to decrease by 24.7% in all. The HZ prevalence was significantly reduced in vaccinated children, while the rate of decrease in non-vaccinated children was low (58.6% and 16.4%, respectively). The median age of the non-vaccinated cases in the postvaccination period (10 [min 0.5-max 17] years) was significantly higher compared to the other groups (p < 0.001). The number of cases aged <2 years was the highest in the vaccinated group (p < 0.001). Administration of a single dose of varicella vaccine was insufficient to decrease the prevalence of HZ <18 years of age. In the post-vaccination period, the frequency of HZ in unvaccinated cases increased in adolescence. In vaccinated children, HZ seems to develop at an earlier age.

Complications of herpes zoster in children.

Herpes zoster (HZ) may cause complications; however, information regarding complications of HZ in children is relatively sparse. We reviewed cases of HZ in children retrospectively and investigated the risk factors contributing to the development of complications. A retrospective observational study was conducted at a tertiary care children's hospital in Japan. Children receiving a diagnosis of HZ between January 2010 and October 2016 were identified from electronic medical records. In this study, the following diseases were recognized as complications of HZ: bacterial skin infection, facial paralysis, meningitis, uveitis and keratitis, postherpetic neuralgia, acute retinal necrosis, pneumonia, and otitis interna. Details regarding clinical information of HZ patients with complications were described. We found 138 cases with HZ. Among these, 58 (42%) occurred in immunocompetent children and 80 cases (58%) occurred in immunocompromised children. Complications were observed in 10 cases of immunocompromised children and in eight cases of immunocompetent children. Although secondary bacterial skin infection was the most common complication (n = 6, 33.3%), severe complications such as facial paralysis (n = 3, 16.7%), meningitis (n = 2, 11.1%), uveitis and keratitis (n= 2, 11.1%), acute retinal necrosis (n = 1, 5.6%), pneumonia (n = 1, 5.6%), and otitis interna (n = 1, 5.6%) were observed. Patients with complications tended to have a rash on the head or neck, compared with those without complications (n = 9, 50% vs n = 18, 15%; P = 0.001). Severe HZ complications may occur in immunocompetent children. Development of a rash on the head or neck might be a risk factor for complications.

A clinico-epidemiological multicenter study of herpes zoster in immunocompetent and immunocompromised hospitalized children.

PurposeThere are limited population-based data regarding herpes zoster in children. Thus we conducted a multi-institutional epidemiological analysis of herpes zoster in children and comparative analysis according to their immune status.Materials and MethodsThe study included 126 children under the age of 18 years who were hospitalized for herpes zoster at 8 hospitals in South Korea, between July 2009 and June 2015. The subjects were divided into 2 groups according to their immune status, and medical records were reviewed.ResultsThere were 61 cases (48.4%) in the immunocompetent group and 65 cases (51.6%) in the immunocompromised group. Median age was older in immunocompromised group (11.4 vs. 8.6) (p<0.001). The mean duration of hospitalization was longer in immunocompromised group (11.0 vs. 6.6) (p<0.001). Patients were treated with oral or intravenous antiviral agents. A total of 12 in immunocompetent group were cured only by oral acyclovir. No treatment failure was found in both groups. Six immunocompromised patients had postherpetic neuralgia and 1 case was in immunocompetent group. In immunocompetent children, herpes zoster was likely caused by early varicella infection. There was no increase in progression of severity in both groups due to appropriate treatment.ConclusionEarly initiation of therapy is necessary for those in immunocompromised conditions. And inactivated herpes zoster vaccination may be considered in immunocompromised adolescents in the future.

Clinical Features of Herpes Zoster in Children according to Immune Status

Clinical Features of Herpes Zoster in Children according to Immune Status

Case Series of Herpes Zoster in Children; Ultraviolet as a Trigger?

Case Series of Herpes Zoster in Children; Ultraviolet as a Trigger?

Herpes Zoster Reacting with Short-Term Corticosteroid Therapy in a Healthy 8-Year-Old Girl

Herpes zoster (HZ) is an infectious disease characterized by acute vesicles, located in the dermatomes formed by the reactivation of varicella zoster virus with dorsal ganglia. Although the disease is common in advanced age and in immunosuppressed people, it can also be seen rarely in healthy children and young people who have had in the early period. Herpes zoster in children have a mild course of the disease and the disease mainly affects the thoracic dermatomes. The clinical manifestations of the disease in children differ from adults. Pain and postherpetic neuralgia are rarely seen in pediatric patients before the onset of herpes zoster rashes and during rash. Unlike the findings in adults, herpes zoster in children is painless but itchy. In this study, we presented a herpes zoster case -8 years old girl- who had suffered chickenpox at the age of one and had received short time corticosteroid therapy for acute urticaria two weeks before herpes zoster.

A Clinico-epidemiological Study of Childhood Herpes Zoster.

Herpes zoster (HZ) is a viral infection believed to be caused by the re activation of varicella zoster virus (VZV) or human herpes virus type 3 (HHV 3) that persists in the posterior nerve root ganglion. HZ is rarely reported in the pediatric age group with an intact immunity. Past infection with VZV and immunization with chickenpox vaccine are key markers in the onset of varicella zoster in children. Our aim was to study the clinicoepidemiological pattern of HZ infection in children aged less than 12 years and to start an early management to prevent long term complications. A prospective observational study over a total duration of 2 years was conducted in a tertiary hospital, and all children less than 12 years of age with diagnosed HZ were included in the study. A total of 39 children were diagnosed to have pediatric HZ infection during the study period. The children were followed up over 4 weeks post diagnosis and were treated with oral acyclovir therapy along with symptomatic management. All children had an uneventful benign course, and their siblings and close pediatric contacts were also screened for the development of HZ or chickenpox during the incubation period. All children were screened for an underlying immunodeficiency and two cases of HIV co infection were detected. HZ is a rare disease in childhood. Varicella in early childhood is a risk factor for HZ in both immunocompromised and immunocompetent children. The appearance of HZ in a young child does not always imply an underlying immunodeficiency or malignancy, but the children should be screened for immunodeficiency. In general, the prognosis is good in healthy children.

Asthma status is an independent risk factor for herpes zoster in children: a population-based cohort study

Backgrounds: Literatures regarding the effects of childhood asthma on the risk of herpes zoster (HZ) is very limited. The aim of this study is to investigate the risks of children developing HZ with asthma.Methods: From the National Health Insurance Research Database, we identified 300,649 patients who had asthma between 2000 and 2007 as an asthma cohort. We identified another matched non-asthma cohort. All subjects were followed until the end of 2008. A Cox model was used to estimate the association of asthma on the risk of HZ.Results: Asthma cohort had significantly higher risk of developing HZ than the comparison cohort (HR=1.15; 95 % CI =1.06-1.26). However, compared to those without regular controller, asthma cohort with regular inhaled corticosteroid (ICS) treatment had slightly increased risk for HZ (HR=1.14; 95% CI=1.01-1.27) but decreased risk for HZ in those with regular combined ICS and Montelukast (HR=0.83; 95% CI=0.69-0.98). Uncontrolled asthma with more than 3-4 times ED visits and admissions per year had 3.72 (CI =1.86-7.47) and 20.5 (CI =10.2-41.2) greater risks for HZ than those without asthma, respectively.Conclusions: Asthma poses an increased risk of zoster, therefore control of asthma is important to minimize risk of HZ.

Herpes Zoster in Children and Adolescents: Is It a Problem?

Herpes Zoster in Children and Adolescents: Is It a Problem?

Increased risk of herpes zoster in children with cancer: A nationwide population-based cohort study.

Herpes zoster is rare in healthy children, but immunocompromised persons have an increased risk of herpes zoster and severe diseases. Considering the very limited information on herpes zoster in children with cancer, we performed a nationwide population-based cohort study to estimate the incidence of herpes zoster in children with cancer and to explore the association between the 2 diseases.Data were obtained from the National Health Research Institutes Database in Taiwan. A total of 4432 children with newly diagnosed cancer between 2000 and 2007 were identified as the cancer cohort, and 17,653 children without cancer frequency-matched by sex and age at entry were considered the noncancer cohort. The association between herpes zoster and childhood cancer was determined.Children with cancer had a higher risk of herpes zoster. The incidence rate of herpes zoster was higher in the cancer cohort than in the noncancer cohort (20.7 vs 2.4 per 10,000 person-years; IRR = 8.6; 95% CI = 4.8–15.6). The cumulative incidence was significantly higher in the cancer cohort (P < 0.0001). Leukemia, lymphoma, and solid tumor were all associated with the increased risk, and leukemia had the highest magnitude of strength of association.This nationwide population-based cohort study demonstrated that children with cancer were associated with an increased risk of herpes zoster. In addition to early antiviral treatment, vaccination with heat-treated zoster vaccine or adjuvanted subunit vaccine could be an appropriate policy to decrease the incidence in children with cancer.

Clinical course and therapeutic approach to varicella zoster virus infection in children with rheumatic autoimmune diseases under immunosuppression.

BackgroundTo analyze the clinical presentation and complications of varicella zoster virus (VZV) infection in children with rheumatic diseases treated with immunosuppressive medication such as biological disease-modifying antirheumatic drugs (bDMARDs) and/or conventional disease-modifying antirheumatic drugs (cDMARDs), and to analyze the therapeutic approach to VZV infections with respect to the concomitant immunosuppressive treatment.MethodsRetrospective multicenter study using the Swiss Pediatric Rheumatology registry. Children with rheumatic diseases followed in a Swiss center for pediatric rheumatology and treated with cDMARD and/or bDMARD with a clinical diagnosis of varicella or herpes zoster between January 2004 and December 2013 were included.ResultsTwenty-two patients were identified, of whom 20 were treated for juvenile idiopathic arthritis, 1 for a polyglandular autoimmune syndrome type III, and 1 for uveitis. Of these 22 patients, 16 had varicella and 6 had herpes zoster. Median age at VZV disease was 7.6 years (range 2 to 17 years), with 6.3 years (range 2 to 17 years) for those with varicella and 11.6 years (range 5 to 16 years) for those with herpes zoster. The median interval between start of immunosuppression and VZV disease was 14.1 months (range 1 to 63 months). Two patients had received varicella vaccine (1 dose each) prior to start of immunosuppression. Concomitant immunosuppressive therapy was methotrexate (MTX) monotherapy (n = 9) or bDMARD monotherapy (n = 2), or a combination of bDMARD with prednisone, MTX or Leflunomide (n = 11). Four patients experienced VZV related complications: cellulitis in 1 patient treated with MTX, and cellulitis, sepsis and cerebellitis in 3 patients treated with biological agents and MTX combination therapy. Six children were admitted to hospital (range of duration: 4 to 9 days) and 12 were treated with valaciclovir or aciclovir.ConclusionThe clinical course of varicella and herpes zoster in children under immunosuppression is variable, with 4 (18 %) of 22 children showing a complicated course. Thorough assessment of VZV disease and vaccination history and correct VZV vaccination according to national guidelines at diagnosis of a rheumatic autoimmune disease is essential to minimize VZV complications during a later immunosuppressive treatment.