id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-304023-s22wi0t0	Basile, L.	Seasonal influenza surveillance: Observational study on the 2017–2018 season with predominant B influenza virus circulation	2019-10-30		.txt	text/plain	2800	183	53	METHODS: Influenza surveillance based on a primary care sentinel surveillance, virological indicators systematic sampling of ILI attended and severe influenza confirmed cases (SHLCI) admitted to hospital. CONCLUSIONS: 2017–2018 influenza season was an unusual epidemic season with an early onset, great predominance of influenza B (Yamagata strain) virus with a high hospitalization rate of severe cases among elderly stressing the need to upgrade vaccine uptake in this age group. 4 The 2017-2018 influenza season presented a predominant circulation of influenza virus type B during the first epidemic weeks with a high rate of severe influenza hospitalizations, especially among the elderly. The aim of this work is to describe the 2017-2018 influenza season according to the PIDIRAC Sentinel Influenza Surveillance System and how it affected elderly population in Catalonia despite moderate vaccine coverage among this age group.	./cache/cord-304023-s22wi0t0.txt	./txt/cord-304023-s22wi0t0.txt