id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-290548-0wezrr1b	Watanabe, Tokiko	Villains or heroes? The raison d'être of viruses	2020-02-19		.txt	text/plain	2919	171	42	For example, Ebola virus disease and acquired immunodeficiency syndrome emerged in 1976 and 1981, respectively, 5-9 and more recently, severe acute respiratory syndrome (SARS), highly pathogenic avian influenza viruses and Middle East respiratory syndrome (MERS) have appeared in human society. In traditional virology, most viruses found in humans are considered to be pathogenic to their hosts; however, recent studies have shown that there are some viruses that have symbiotic relationships with their hosts and do not cause disease. 44 In the last a few decades, emerging infectious diseases caused by newly identified viruses, such as Ebola virus, 5-8 SARS and MERS coronaviruses, [10] [11] [12] human immunodeficiency virus (HIV), 9 Nipah virus and Hendra virus, [45] [46] [47] [48] have appeared in human society. To date, the PREDICT programme has found over 1100 viruses in animals and humans, including a new Ebola virus and MERSand SARS-like coronaviruses.	./cache/cord-290548-0wezrr1b.txt	./txt/cord-290548-0wezrr1b.txt