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Number of surveyed women at delivery, number of pregnant women vaccinated for month stratified by trimester of vaccination, and proportion of influenza positive samples from routine surveillance*, Nicaragua 2014 *Proportions of influenza positive samples from routine surveillance correspond to year 2014. Average level of influenza activity corresponds to years 2011–2013 (Nicaragua, national influenza surveillance data, Severe Acute Respiratory Infections network, SARInet, PAHO).
