The 0-5 age group had the highest attack rate (13.37%), followed by the 6-12 age group (7.22%). At about 2.03%, the attack rate is lowest among those aged 13 to 60.c.)(b) Description of Attack Rates: The attack rate for the 0-5 age group is highest at 13.37%, followed by the 6-12 age group at 7.22%. The attack rate for the 13-60 age group is the lowest at approximately 2.03%.

(3 marks) Table 2 The frequency of disease and attack rates per age group Age group in Frequency Population Attack rate years 112 838 13.37% 0-5 x