Sentence: Malaysian hajj pilgrims with previous experience of hajj ( OR 0.24 ; 95 % CI 0.10-0.56 ) or umrah ( OR 0.19 ; 95 % CI 0.07-0.52 ) and those who have practiced good hand hygiene ( OR 0.35 ; 95 % CI 0.16-0.79 ) were found to be significantly associated with lower risk of having respiratory illness. 
 Section: finding