Discrimination of influenza virus-infected nasal fluids by Vis-NIR spectroscopy

► Vis-NIR spectra of the nasal fluids combined with chemometrics analysis achieve separation of influenza patients from non-influenza patients. ► Vis-NIR spectroscopy represents a useful tool for the diagnosis of influenza. ► Spectroscopic approach to diagnosis of influenza has been shown using Vis-NIR radiation.