نتایج جستجو برای: influenza like illness
تعداد نتایج: 809256 فیلتر نتایج به سال:
Influenza is rarely laboratory-confirmed and the outpatient influenza burden is rarely studied due to a lack of suitable data. We used the Clinical Practice Research Datalink (CPRD) and surveillance data from Public Health England in a linear regression model to assess the number of persons consulting UK general practitioners (GP episodes) for respiratory illness, otitis media and antibiotic pr...
BACKGROUND Starting in the 2006/2007 influenza season, the US Advisory Committee on Immunization Practices expanded its recommendations for seasonal influenza vaccination to include healthy children aged 24-59 months. The parallel Canadian organization, the National Advisory Committee on Immunization, did not at that time issue a similar recommendation, thereby creating a natural experiment to ...
BACKGROUND In April, 2009, the first cases of influenza A H1N1 were registered in Mexico and associated with an unexpected number of deaths. We report the timing and spread of H1N1 in cases, and explore protective and risk factors for infection, severe disease, and death. METHODS We analysed information gathered by the influenza surveillance system from April 28 to July 31, 2009, for patients...
OBJECTIVE To assess the effectiveness of the pandemic influenza A/H1N1 vaccine used in Canada during autumn 2009. DESIGN Test negative incident case-control study based on sentinel physician surveillance system. SETTING Community based clinics contributing to sentinel networks in British Columbia, Alberta, Ontario, and Quebec, Canada. PARTICIPANTS 552 patients who presented to a sentinel ...
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