TITLE

Characteristics of Hospitalized Cases with Influenza A (H1N1)pdm09 Infection during First Winter Season of Post-Pandemic in China

AUTHOR(S)
Xu, Cuiling; Iuliano, A. Danielle; Chen, Min; Cheng, Po-Yung; Chen, Tao; Shi, Jinghong; Yang, Jing; Wang, Lijie; Yuan, Fan; Widdowson, Marc-Alain; Shu, Yuelong
PUB. DATE
February 2013
SOURCE
PLoS ONE;Feb2013, Vol. 8 Issue 2, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Influenza A (H1N1)pdm09 (2009 H1N1) re-circulated as the predominant virus from January through February 2011 in China. National surveillance of 2009 H1N1 as a notifiable disease was maintained to monitor potential changes in disease severity from the previous season. Methodology/Principal Findings: To describe the characteristics of hospitalized cases with 2009 H1N1 infection and analyze risk factors for severe illness during the 2010–2011winter season in China, we obtained surveillance data from hospitalized cases with 2009 H1N1 infection from November 2010 through May 2011, and reviewed medical records from 701 hospitalized cases. Age-standardized risk ratios were used to compare the age distribution of patients that were hospitalized and died due to 2009 H1N1 between the 2010–2011winter season to those during the 2009–2010 pandemic period. During the 2010–2011 winter season, children less than 5 years of age had the highest relative risk of hospitalization and death, followed by adults aged 65 years or older. Additionally, the relative risk of hospitalized cases aged 5–14 and 15–24 years was lower compared to children less than 5 years of age. During the winter season of 2010–2011, the proportions of adults aged 25 years or older for hospitalization and death were significantly higher than those during the 2009–2010 pandemic period. Being male, having a chronic medical condition, delayed hospital admission (≥3 days from onset) or delayed initiation of antiviral treatment (≥5 days from onset) were associated with severe illness among non-pregnant patients ≥2 years of age. Conclusions/Significance: We observed a change in high risk groups for hospitalization for 2009 H1N1 during the winter months immediately following the pandemic period compared to the high risk groups identified during the pandemic period. Our nationally notifiable disease surveillance system enabled us to understand the evolving epidemiology of 2009 H1N1 infection after the pandemic period.
ACCESSION #
87623572

 

Related Articles

  • Nowcasting pandemic influenza A/H1N1 2009 hospitalizations in the Netherlands. Donker, Tjibbe; Boven, Michiel; Ballegooijen, W.; Klooster, Tessa; Wielders, Cornelia; Wallinga, Jacco // European Journal of Epidemiology; 

    During emerging epidemics of infectious diseases, it is vital to have up-to-date information on epidemic trends, such as incidence or health care demand, because hospitals and intensive care units have limited excess capacity. However, real-time tracking of epidemics is difficult, because of the...

  • First-year results of the Global Influenza Hospital Surveillance Network: 2012-2013 Northern hemisphere influenza season. Puig-Barberà, Joan; Tormos, Anita; Sominina, Anna; Burtseva, Elena; Launay, Odile; Ciblak, Meral A.; Natividad-Sancho, Angels; Buigues-Vila, Amparo; Martínez-Úbeda, Sergio; Mahé, Cedric // BMC Public Health;2014, Vol. 14 Issue 1, p41 

    Background The Global Influenza Hospital Surveillance Network (GIHSN) was developed to improve understanding of severe influenza infection, as represented by hospitalized cases. The GIHSN is composed of coordinating sites, mainly affiliated with health authorities, each of which supervises and...

  • Hospitalizations for Pandemic (H1N1) 2009 among Maori and Pacific Islanders, New Zealand. Verrall, Ayesha; Norton, Katherine; Rooker, Serena; Dee, Stephen; Olsen, Leeanne; Tan, Chor Ee; Paull, Sharon; Allen, Richard; Blackmore, Timothy K. // Emerging Infectious Diseases;Jan2010, Vol. 16 Issue 1, p100 

    Community transmission of influenza A pandemic (H1N1) 2009 was followed by high rates of hospital admissions in the Wellington region of New Zealand, particularly among Maori and Pacific Islanders. These findings may help health authorities anticipate the effects of pandemic (H1N1) 2009 in other...

  • Predictors of clinical outcome in a national hospitalised cohort across both waves of the influenza A/H1N1 pandemic 2009–2010 in the UK. Puja R Myles; Malcolm G Semple; Wei Shen Lim; Peter J M Openshaw; Elaine M Gadd; Robert C Read; Bruce L Taylor; Stephen J Brett; James McMenamin; Joanne E Enstone; Colin Armstrong; Barbara Bannister; Karl G Nicholson; Jonathan S Nguyen-Van-Tam // Thorax;Aug2012, Vol. 67 Issue 8, p709 

    BackgroundAlthough generally mild, the 2009–2010 influenza A/H1N1 pandemic caused two major surges in hospital admissions in the UK. The characteristics of patients admitted during successive waves are described.MethodsData were systematically obtained on 1520 patients admitted to...

  • HOSPITAL DISCHARGE DATA FOR GUILLAINBARRE SYNDROME AND INFLUENZA A (H1N1) VACCINE ADVERSE EVENTS.  // Romanian Journal of Infectious Diseases;2010, Vol. 13 Issue 3, p134 

    No abstract available.

  • Incidence and risk factors of exacerbations among COPD patients in primary health care: APMPOC study. Borrell, Eulàlia; Rodríguez, Mar; Torán, Pere; Muñoz, Laura; Pera, Guillem; Montellà, Núria; Monteagudo, Mònica; Urrea, Magalí; Puigfel, Yolanda; Negrete, Antonio; Mezquiriz, Xavier; Domènech, Cristina; Lacasta, Anna; García, Ma Llum; Maneus, Sandra; Tintoré, Glòria // BMC Public Health;2009, Vol. 9 Issue 1, p8 

    Background: Worldwide, chronic obstructive pulmonary disease (COPD) is the fourth cause of death. Exacerbations have a negative impact on the prognosis of COPD and the frequency and severity of these episodes are associated with a higher patient mortality. Exacerbations are the first cause of...

  • The Clinical Characteristics of Influenza B Infection during the 2011-2012 Influenza Season. Min Sun Kim; Hyun Woo Sung; E. Young Bae; Seung Beom Han; Dae Chul Jeong; Jin Han Kang // Korean Journal of Pediatric Infectious Diseases;2013, Vol. 20 Issue 2, p89 

    Purpose: This retrospective study was performed to identify the clinical characteristics of influenza B infection and compare to influenza A infection. Methods: Medical records of patients diagnosed with influenza using a multiplex PCR test, admitted to Seoul St. Mary's Hospital, during the...

  • Clinical features of the 2009 swine-origin influenza A (H1N1) outbreak in Japan. Takayama, Koji; Kuramochi, Jin; Oinuma, Takeshi; Kaneko, Hiromi; Kurasawa, Satoshi; Yasui, Makito; Okayasu, Kaori; Ono, Hiroshi; Inase, Naohiko // Journal of Infection & Chemotherapy (Springer Science & Business;Jun2011, Vol. 17 Issue 3, p401 

    To clarify the clinical symptoms of the influenza A virus during the 2009 pandemic influenza outbreak, we describe the clinical features of outpatients diagnosed with type A influenza by use of the rapid influenza diagnostic test (RIDT) from September to December 2009. Questionnaires were used...

  • Assessment of ESSENCE Performance for Influenza-Like Illness Surveillance After an Influenza Outbreak -- U.S. Air Force Academy, Colorado, 2009. Witkop, C.; Duffy, M.; Cohen, L.; Fishbein, D.; Selent, M. // MMWR: Morbidity & Mortality Weekly Report;4/8/2011, Vol. 60 Issue 13, p406 

    The article summarizes the results of the evaluation of the Electronic Surveillance System for the Early Notification of Community-Based Epidemics (ESSENCE) influenza-like illness (ILI) surveillance system after a 2009 pandemic influenza A (H1N1) outbreak at the U.S. Air Force (USAF) Academy in...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics