Publications by authors named "Xia Aimei"

Objectives: We used a case-ascertained study to determine the features of household transmission of SARS-CoV-2 Omicron variant in Shanghai, China.

Methods: In April 2022, we carried out a household transmission study from 309 households of 335 SARS-CoV-2 pediatric cases referred to a designated tertiary Children's Hospital. The detailed information can be collected from the 297 households for estimating the transmission parameters.

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Article Synopsis
  • - Parents and healthcare providers often delay or avoid immunizations for children with neurological conditions, prompting a study to explore this issue and the effect of specialist recommendations on vaccination practices.
  • - The study analyzed data from 2,221 children with neurological conditions seeking vaccination advice in China between 2017-2019, revealing that 90.9% had delayed immunizations and the overall vaccine coverage rate was only 56.1%.
  • - Results showed that specialized consultations significantly improved vaccine confidence, with 92.2% of children resuming immunization without any reported worsening of their neurological conditions.
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Objective: To describe the information technology and artificial intelligence support in management experiences of the pediatric designated hospital in the wave of COVID-19 in Shanghai.

Methods: We retrospectively concluded the management experiences at the largest pediatric designated hospital from March 1st to May 11th in 2022 in Shanghai. We summarized the application of Internet hospital, face recognition technology in outpatient department, critical illness warning system and remote consultation system in the ward and the structed electronic medical record in the inpatient system.

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Article Synopsis
  • - The study investigated COVID-19 cases in children under 18 in Shanghai during the early Omicron variant outbreak, focusing on their clinical and epidemiological details from March 7-31, 2022.
  • - Of the 376 pediatric cases, 68.4% were symptomatic, with vaccination reducing the likelihood of symptomatic infections and febrile diseases by 35% and 33%, respectively.
  • - Common symptoms included fever and cough, with most infections linked to household exposure, highlighting the widespread community transmission of the Omicron variant and the prevalence of asymptomatic cases among children.
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Serogroup Y Neisseria meningitidis (NmY) is rare in China, and only serogroup A and C meningococcal polysaccharide vaccines (MPVs) are included in the national vaccination schedule. We describe a case of fulminant meningococcemia caused by NmY, which occurred in a pediatric patient (2 years old) for the first time in China, confirmed by culture. Although the boy was treated in time, the dry gangrene in his toes and fingers left him with severe sequelae.

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To understand the epidemiological and clinical features of the symptomatic and asymptomatic pediatric cases of COVID-19, we carried out a prospective study in Shanghai during the period of January 19 to April 30, 2020. A total of 49 children (mean age 11.5 ± 5.

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Background: Non-polio enrerovirus causes a wide spectrum of neurologic syndromes. The epidemiological and clinical profiles of non-polio enrerovirus-associated central nervous system infections vary by regions and over year.

Objectives: This study aimed to understand the prevalence, serotypes and clinical characteristics of enterovirus-associated aseptic meningitis, encephalitis and meningo-encephalitis in children in Shanghai during 2016-2018.

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We first described the 2019 novel coronavirus infection in 10 children occurring in areas other than Wuhan. The coronavirus diseases in children are usually mild and epidemiological exposure is a key clue to recognize pediatric case. Prolonged virus shedding is observed in respiratory tract and feces at the convalescent stage.

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Hand, foot, and mouth disease (HFMD) is mainly epidemic in China and Southeast Asian countries. A novel enterovirus 71 vaccine has been available in China for preventing severe HFMD since 2016. Knowledge of the dynamic epidemiology of HFMD in different regions is necessary for appropriate intervention strategies.

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Background: Despite substantial progress toward measles control are making in China, measles outbreaks in immunocompromised population still pose a challenge to interrupt endemic transmission. This study aimed to investigate the features of measles in pediatric hematology and oncology patients and explore the reasons behind the outbreak.

Methods: We collected demographic, epidemiological, and clinical data of immunocompromised measles children.

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Objective: To understand the epidemiological profiles of hand, foot and mouth disease (HFMD) and the major enteroviruses causing the epidemics of HFMD in Shanghai from 2010 to 2014.

Method: The city-wide surveillance data between 2010 and 2014 were used to analyze the epidemiologic characteristics of the HFMD outbreaks in Shanghai. The annual incidence of HFMD was estimated based on the 2010 Shanghai Census data.

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Background: In 2012 a large outbreak of hand, foot, and mouth disease (HFMD) widely spread over China, causing more than 2 million cases and 567 deaths. Our purpose was to characterize the major pathogens responsible for the 2012 HFMD outbreak and analyze the genetic characterization of the enterovirus 71 (EV71) strains in Shanghai; also, to analyze the dynamic patterns of neutralizing antibody (NAb) against EV71 and evaluate the diagnostic value of several methods for clinical detection of EV71.

Methods: Clinical samples including stool, serum and CSF were collected from 396 enrolled HFMD inpatients during the peak seasons in 2012.

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Article Synopsis
  • The study investigates immune responses in children with measles, focusing on innate immune receptors and cytokines.
  • The research involved comparing hospitalized measles patients with healthy controls, analyzing mRNA and protein levels of specific immune markers.
  • Findings revealed lower expressions of certain immune receptors and interferons in measles patients, while IL-10 levels were significantly higher, indicating an altered immune response during the infection.
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Objective: To understand the clinical and epidemiological aspects of avian influenza A (H7N9) virus infection in children.

Method: The clinical data of the first confirmed pediatric case of avian influenza A(H7N9) virus infection were collected, and the epidemiological information, presenting symptoms, laboratory investigation, management and outcome were analyzed. The data of the pediatric cases were also compared with those of the adults cases.

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Background: An effective enterovirus 71 (EV71) vaccine is needed to control the annual outbreaks of hand, foot and mouth disease (HFMD) in China. Adequate epidemiologic data relating to HFMD are needed to make decisions about appropriate public health interventions and implementation of the new EV71 vaccine.

Methods: We analyzed the population-based epidemiologic characteristics, clinical outcome and laboratory investigation of the 2011 HFMD outbreak in children based on the citywide surveillance system in Shanghai.

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