Table 1.

Doubling time and subdistrict effective reproductive number (R_sd) for FMD outbreaks by serotype in cattle in northern Thailand between 2015 and 2017.

Date	Serotype	t2 −t1	$\frac{q2}{q1}$	T d	R sd
Jan–Sep 2015	Overall	10	5.33	4.14	1.04
Feb–Aug 2016	Overall	13	3.50	7.19	1.02
Oct–Nov 2017	Overall	5	3.67	2.67	1.06
Jan–Sep 2015	O	7	10	2.11	1.07
Feb–Aug 2016	O	18	26	3.83	1.04
Oct–Nov 2017	O	3	2.33	2.45	1.06

Overall, FMDV serotype O, serotype A and unidentified serotype; O, FMDV serotype O; t₁, started month; t₂, peak month; q₁, number of subdistricts affected with FMD at started month; q₂, number of subdistrict affected with FMD at peak month; T_d, time in which the number of outbreaks duplicates; R_sd, subdistrict effective reproductive number.