1. Children below the age of 3 years were neither included in original Centor or in McIsaac modified Centor Score because acute rheumatic fever is rare in this age group, the classic presentation of streptococcal pharyngitis is uncommon. Selected children <3 years who have other risk factors such as an older sibling with Group A streptococcal infection, are recommended to be considered for testing [2]. A similar study from Belgium included children between 2-16 years [3].

2. We apologize for the inadvertent error in writing the scores as "4-5" instead of 4, and " < 5", instead of 5.

3. Cough did have a high sensitivity for streptococcal pharyngitis in this study and hence was reported as such, even though in modified Centor score one point is being attributed to absence of cough. Therefore, we questioned the utility of Centor Score as a screening tool.

4. Though we excluded children with rhinorrhoea with obvious viral etiology, we could not exclude all children with rhinorrhea. Logistics prevented us from considering investigations to detect viral etiology.