id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-001922-zfpg6dgj	Zhang, Xu-Sheng	Construction of the influenza A virus transmission tree in a college-based population: co-transmission and interactions between influenza A viruses	2016-01-29		.txt	text/plain	4593	245	52	The method uses knowledge of which subtype each case is infected with (and whether they were co-infected), contact information and symptom onset date of each case in the influenza outbreak. RESULTS: Analysis of the constructed transmission tree shows that the simultaneous presence of the two influenza viruses increases the infectivity and the transmissibility of A/H1N1 virus but whether it changes the infectivity of A/H3N2 is unclear. In this short report we extend this inference method to construct the transmission tree that includes two influenza A viruses and their co-infection. The likely reason for this difference lies in the fact that pandemic A/H1N1 is a novel virus while A/ H3N2 is an endemic seasonal virus in the study region [12] so some pre-existing immunity against A/H3N2 Fig. 2 Constructed transmission tree of influenza A virus: a The relative frequency of the generation intervals; b The average case reproduction number R t as it varies with time.	./cache/cord-001922-zfpg6dgj.txt	./txt/cord-001922-zfpg6dgj.txt