The impact of influenza has been recognized for centuries. Its seasonality in temperate
climates has allowed estimates of mortality and severe morbidity, such as hospitalization, to …

Respiratory tract infections are a frequent cause of medical consultations. Although the
majority of such infections are viral in aetiology, they account for three-quarters of all …

This report updates the 2007 recommendations by CDC's Advisory Committee on
Immunization Practices (ACIP) regarding the use of influenza vaccine and antiviral agents …

Rationale: Much of the total disease burden and cost of chronic obstructive pulmonary
disease (COPD) is associated with acute exacerbations of COPD (AECOPD). Serum …

Influenza‐like illness (ILI) definitions have been used worldwide for influenza surveillance.
These different case definitions can vary with regard to sensitivity and predictive values for …

Objective To assess influenza vaccine effectiveness against influenzalike illness (ILI) and ILI
impact on health care use and school performance among college and university students …

Background. The symptoms of influenza infection in outpatients are well described. The
Centers for Disease Control and Prevention (CDC) definition of an influenza-like illness (ILI) …

Background. During influenza outbreaks, fever and cough are the most accurate symptoms
in predicting influenza virus infection in the community. Objective. To determine the …

Recent studies have challenged the Centers for Disease Control and Prevention (CDC)
definition of influenza-like illness (ILI) as 'temperature of! 37.8 8C and either cough or sore …

BACKGROUND: Laboratory diagnosis of influenza has previously relied on viral isolation in
culture. Rapid antigen tests (RATs) are now available but few studies have examined their …