| a 12-month surveillance of 'flu-like infections in a sample from the population of lagos. | 5,576 people who had two or more of the following symptoms, running nose, cough, fever and crepitations/rhonchi over the chest were interviewed. 1,355 specimens of nasal and throat swabs from those interviewed were processed for viruses associated with upper respiratory tract infection. there was a sharp rise in 'flu-like symptoms in march 1976, followed by a much higher incidence from june, reaching a peak in august. influenza a was isolated from most of the specimens collected. a few para-infl ... | 1982 | 6298982 |