id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-259422-5ex12eun	Graat, Judith M	A prospective, community-based study on virologic assessment among elderly people with and without symptoms of acute respiratory infection	2003-12-11		.txt	text/plain	3897	196	42	title: A prospective, community-based study on virologic assessment among elderly people with and without symptoms of acute respiratory infection METHODS: In a 1-year community-based study, we prospectively investigated the possible virologic cause of acute respiratory infections in 107 symptomatic case episodes and 91 symptom-free control periods. Therefore, in this prospective, community-based study, we investigated the presence of known respiratory viruses in elderly persons both with and without symptoms of an acute upper respiratory tract infection. Second, we compared the clinical characteristics of the persons suffering from an acute respiratory infection, during episodes with positive and negative virologic laboratory diagnosis. Cases who reported their symptoms after 3 days to the study nurse were excluded for virologic assessment to overcome false negative test results. Preliminary results of a Dutch study being performed in persons consulting their general practitioner for signs and symptoms of an acute respiratory infection, showed a positive virologic assessment in 19% of the controls [16] .	./cache/cord-259422-5ex12eun.txt	./txt/cord-259422-5ex12eun.txt