id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-286070-qwq46b8a	Kretzschmar, Mirjam	Ring Vaccination and Smallpox Control	2004-05-17		.txt	text/plain	5411	278	52	The basic reproduction number R 0 describes the average number of secondary cases produced from contact with an infected person during the infectious period and without intervention. The effectiveness of the intervention therefore is determined by the probability of diagnosis per day of the infectious period, the time needed to identify contacts of the close contact and casual contact ring, the vaccination coverage in the close contact and the casual contact ring, and whether contacts are monitored. Our simulation results show that a smallpox epidemic starting from a small number of index cases can be contained by ring vaccination provided the intervention measures are very effective. Here the critical vaccination coverage in the casual contact ring is shown as a function of the basic reproduction number R 0 for different assumptions about the time it takes to diagnose infectious persons.	./cache/cord-286070-qwq46b8a.txt	./txt/cord-286070-qwq46b8a.txt