Case Definition for Influenza A (H1N1) Virus Infection (Swine Flu)

After identification of novel influenza A (H1N1) virus infection in Mexico, a case definition was developed. The initial definition of suspected novel influenza A (H1N1) virus infection included any hospitalized patient with severe acute respiratory illness. On May 1, 2009, this definition was expanded to include any person with acute respiratory illness defined as fever and either sore throat or cough. On May 11, 2009, the definition of suspected case was changed again to include any person with:

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Rochester Criteria for Identifying Febrile Infants at Low Risk for Serious Bacterial Infection

The Rochester criteria were developed to identify febrile infants aged 60 days or younger at low-risk of bacterial infection and do not include cerebrospinal fluid (CSF) testing.
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Clinical and Laboratory “Low Risk” Criteria for Children Younger Than 3 Months with Fever and No Focus of Infection

Clinical criteria

  • Born at term (gestational age >/= 37 weeks)with uncomplicated nursery stay
  • Previously healthy infants
  • Notoxic manifestations
  • No focal bacterial infection (except otitis media) Continue reading