Table 1.

Number of cases selected as emergent, as a function of radius distance (V) and elapsed past time without cases (T).

T	V
	10	20	30	40	50	60	70	80	90	100	150	200	300	400	500
7	687	389	256	185	142	115	87	75	61	55	35	28	18	13	11
14	555	318	195	133	102	78	62	54	48	41	27	21	12	8	5
21	489	291	176	118	89	72	54	46	40	34	22	16	15	7	4
28	446	262	152	100	77	60	48	39	36	32	22	16	11	5	4
60	525	237	131	86	67	52	42	36	31	27	16	15	8	7	4
90	504	236	129	84	68	52	42	33	31	27	16	14	8	7	4

Parameters values are expressed as: T = time by days and V = distance in kilometers.