Table 2.

Permutation test results for the serotype introduction in eastern and western provinces.

Province	Serotype introduction (average villages affected)	Baseline (average villages affected)	Difference	p-Value
Eastern provinces: serotype introduction vs. baseline	265	41	224	0.03
Western provinces: serotype introduction vs. baseline	127	19	108	0.02

Note: The table shows the difference in the number of villages affected during the serotype introduction period compared to the baseline (average of the number of villages affected outside of the serotype introduction period).