• 1
    Perez-Padilla R, de la Rosa-Zamboni D, Ponce de Leon S et al. Pneumonia and respiratory failure from swine-origin influenza A (H1N1) in Mexico. N Engl J Med 2009; 361:680689.
  • 2
    Libster R, Bugna J, Coviello S et al. Pediatric hospitalizations associated with 2009 pandemic influenza A (H1N1) in Argentina. N Engl J Med 2010; 362:4555.
  • 3
    Cunha BA. The clinical diagnosis of severe viral influenza A. Infection 2008; 36:9293.
  • 4
    Chen SY, Chen YC, Chiang WC et al. Field performance of clinical case definitions for influenza screening during the 2009 pandemic. Am J Emerg Med 2012; 30:17961803.
  • 5
    Cunha BA, Syed U, Stroll S et al. Winthrop-University Hospital Infectious Disease Division's swine influenza (H1N1) pneumonia diagnostic weighted point score system for hospitalized adults with influenza-like illnesses (ILIs) and negative rapid influenza diagnostic tests (RIDTs). Heart Lung 2009; 38:534538.
  • 6
    Cruz AT, Demmler-Harrison GJ, Caviness AC et al. Performance of a rapid influenza test in children during the H1N1 2009 influenza A outbreak. Pediatrics 2010; 125:e645e650.
  • 7
    Rashid H, Shafi S, Haworth E et al. Value of rapid testing for influenza among Hajj pilgrims. Travel Med Infect Dis 2007; 5:310313.
  • 8
    Andresen DN, Kesson AM. High sensitivity of a rapid immunochromatographic test for detection of influenza A virus 2009 H1N1 in nasopharyngeal aspirates from young children. J Clin Microbiol 2010; 48:26582659.
  • 9
    Talbot HK, Williams JV, Zhu Y et al. Failure of routine diagnostic methods to detect influenza in hospitalized older adults. Infect Control Hosp Epidemiol 2010; 31:683688.
  • 10
    Chu TP, Li CC, Wang L et al. A surveillance system to reduce transmission of pandemic H1N1 (2009) influenza in a 2600-bed medical center. PLoS ONE 2012; 7:e32731.
  • 11
    Kim C, Ahmed JA, Eidex RB et al. Comparison of nasopharyngeal and oropharyngeal swabs for the diagnosis of eight respiratory viruses by real-time reverse transcription-PCR assays. PLoS ONE 2011; 6:e21610.
  • 12
    Li CC, Wang L, Eng HL et al. Correlation of pandemic (H1N1) 2009 viral load with disease severity and prolonged viral shedding in children. Emerg Infect Dis 2010; 16:12651272.
  • 13
    Sutter DE, Worthy SA, Hensley DM et al. Performance of five FDA-approved rapid antigen tests in the detection of 2009 H1N1 influenza A virus. J Med Virol 2012; 84:16991702.
  • 14
    Wu UI, Wang JT, Chen YC et al. Severity of pandemic H1N1 2009 influenza virus infection may not be directly correlated with initial viral load in upper respiratory tract. Influenza Other Respi Viruses 2012; 6:367373.
  • 15
    Brouqui P, Vu Hai V, Nougairede A et al. Improving the diagnostic efficiency of H1N1 2009 pandemic flu: analysis of predictive clinical signs through a prospective cohort. PLoS Curr 2009; 1:RRN1120.
  • 16
    Chan PA, Mermel LA, Andrea SB et al. Distinguishing characteristics between pandemic 2009-2010 influenza A (H1N1) and other viruses in patients hospitalized with respiratory illness. PLoS ONE 2011; 6:e24734.
  • 17
    Phungoen P, Sawanyawisuth K, Engchanil C et al. Clinical factors predictive of PCR positive in pandemic H1N1 2009 influenza virus infection. Influenza Other Respi Viruses 2011; 5:e558e562.
  • 18
    Crum-Cianflone NF, Blair PJ, Faix D et al. Clinical and epidemiologic characteristics of an outbreak of novel H1N1 (swine origin) influenza A virus among United States military beneficiaries. Clin Infect Dis 2009; 49:18011810.
  • 19
    Gao F, Loring C, Laviolette M et al. Detection of 2009 pandemic influenza A(H1N1) virus Infection in different age groups by using rapid influenza diagnostic tests. Influenza Other Respi Viruses 2012; 6:e30e34.
  • 20
    Hurt AC, Baas C, Deng YM et al. Performance of influenza rapid point-of-care tests in the detection of swine lineage A(H1N1) influenza viruses. Influenza Other Respi Viruses 2009; 3:171176.
  • 21
    Bravender T. Epstein-Barr virus, cytomegalovirus, and infectious mononucleosis. Adolesc Med State Art Rev 2010; 21:251264. ix
  • 22
    Lindblom A, Bhadri V, Soderhall S et al. Respiratory viruses, a common microbiological finding in neutropenic children with fever. J Clin Virol 2010; 47:234237.
  • 23
    Cao B, Li XW, Mao Y et al. Clinical features of the initial cases of 2009 pandemic influenza A (H1N1) virus infection in China. N Engl J Med 2009; 361:25072517.
  • 24
    Cunha BA, Pherez FM, Schoch P. Diagnostic importance of relative lymphopenia as a marker of swine influenza (H1N1) in adults. Clin Infect Dis 2009; 49:14541456.
  • 25
    Van der Meer V, Neven AK, van den Broek PJ et al. Diagnostic value of C reactive protein in infections of the lower respiratory tract: systematic review. BMJ 2005; 331:2631.
  • 26
    Wu W, Zhang W, Booth JL et al. Influenza A(H1N1)pdm09 virus suppresses RIG-I initiated innate antiviral responses in the human lung. PLoS ONE 2012; 7:e49856.
  • 27
    Ahn S, Kim WY, Kim SH et al. Role of procalcitonin and C-reactive protein in differentiation of mixed bacterial infection from 2009 H1N1 viral pneumonia. Influenza Other Respi Viruses 2011; 5:398403.
  • 28
    Ngaosuwankul N, Noisumdaeng P, Komolsiri P et al. Influenza A viral loads in respiratory samples collected from patients infected with pandemic H1N1, seasonal H1N1 and H3N2 viruses. Virol J 2010; 7:775.
  • 29
    Chen Y, Liang W, Yang S et al. Human infections with the emerging avian influenza A H7N9 virus from wet market poultry: clinical analysis and characterisation of viral genome. Lancet 2013; 381:19161925.