No announcement yet.

Chile Epidemiology reports 2013

  • Filter
  • Time
  • Show
Clear All
new posts

  • Chile Epidemiology reports 2013


    machine translated;

    Executive Summary
    In the last two weeks of 2013, there is a stabilization of influenza-like illness (ILI) with intensity
    moderate and alert area endemic channel. At the regional level remains high rates in Tarapaca
    Magallanes, Los Lagos and Los Rios, but less than in the SE 26. Coquimbo stands having
    significant increase compared to the previous week. Consultations hospital emergency services by
    ILI early increase compared to that observed in previous years, remaining at week 27 in
    1.6% of total emergency care.

    The positivity for respiratory viruses in the ISP network reaches 40% at week 27, predominantly among RSV
    positive (69%) and maintaining an upward trend, followed by influenza A (18%) who shows a stabilization.

    In relation to the monitoring of severe acute respiratory infection (SARI), RSV remains the main virus
    detected, followed by influenza A with 41% of cases of severe ARI accumulated to date. Regarding influenza,
    prevailing influenza A (H1N1) pdm09 representing 73% of SARI cases by influenza A subtyped.

    In South American countries, like Chile, is a high activity of respiratory infections
    Acute showing an upward trend, with predominant circulating RSV and influenza co-circulating
    A (H1N1) pdm09. In this context of increasing seasonal influenza and according to national regulations
    force, is required to strengthen preventive measures, management of cases of influenza and surveillance.

    1. ILI outpatient sentinel
    Surveillance of influenza-like illness
    (ILI) 1 made through sentinel sites,
    shows an upward trend until week
    epidemiological (SE) ​​24, stabilizing the past
    weeks endemic channel outside and recording
    in the SE 27 26.4 rate per hundred
    thousand inhabitants. Notification of ILI presents
    moderate intensity is above
    expected as shown in the channel.

    The cumulative rate of ILI nationally (234.7
    hundred thousand habs.) is higher by 72% compared to
    observed the same period in 2012 (136.3 per hundred thousand
    habs.). In EW 27 is maintained at high rates in Tarapaca
    Magallanes, Los Lagos and Los Rios, but less
    intensity than in the SE 262. Coquimbo is highlighted
    presents significant increase over a week
    above (Table 2 and Appendix 1).
    Up to EW 27 of 2013 has been sampled at 915
    ILI notified, confirmed by immunofluorescence
    276 cases of respiratory viruses (30% positivity):
    Influenza A (185 cases), RSV (52 cases), parainfluenza
    (34 cases), influenza B (5 cases) and adenovirus
    (3 cases).

    In EW 27, 97 respiratory samples were analyzed in
    ILI cases with positivity for respiratory viruses
    of 37% (36 cases), higher than the previous SE (35% of
    A total 93 samples). 15 are confirmed cases of influenza
    A: Iquique (3), Atacama (1), Coquimbo (1),
    Valparaiso (2) Conception (2), Valdivia (2) Punta
    Arenas (3) and James (1). Moreover, cases are detected
    VRS (17), parainfluenza (3) and Adenovirus (1).

    4. SARI Surveillance: Influenza and other respiratory viruses

    In EW 27, 2013, were 1,793 reported cases of SARI
    sentinel and non-sentinel of our country with
    977 positive cases of respiratory viruses, higher than
    observed the same quarter of 2012 which records
    1219 SARI cases (50% positivity). analysis
    accumulated to date shows predominance VRS (46%) and
    Influenza A (H1N1) pdm09 (32%), followed by parainfluenza
    (7%), no subtype influenza A (7%), influenza
    AH3N2 (3%), adenovirus (3%), influenza B (2%) and
    rest to other respiratory viruses.

    In EW 27 out of 91 SARI cases studied,
    67 confirmed respiratory virus cases: mainly
    RSV (39 cases), followed by influenza A (25 cases) and
    rest are parainfluenza and adenovirus. (Figure

    Most positive cases presented in
    Children under 2 years (355 cases) predominating
    RSV (73%), followed by influenza, parainfluenza and
    adenovirus. The 15-59 age group accounted for 20%
    of the SARI is detected therein and mainly Influenza
    A (H1N1) pdm09 (Figure 6).
    According gravity, 15% of cases (n = 142) SARI
    required ICU admission, with 25% in cases of
    influenza A (H1N1) pdm09.

    39 cases have been reported dead associated SARI
    influenza A and and another with influenza B. Regarding influenza
    A, 33 cases subtipifican as A (H1N1) pdm09

    (corresponding to 22 were adults between 20 and 59
    years) and 3 to influenza A (H3N2) and 3 without subtyping. an
    64% of cases are found dead SARI presence
    from underlying disease or risk factor.
    Twitter: @RonanKelly13
    The views expressed are mine alone and do not represent the views of my employer or any other person or organization.