| profile of bacterial pneumonia during hajj. | background & objectives : the congregation of a large number of people during hajj seasons from different parts of the world in overcrowded conditions within a confined area for a long period of time presents many public health challenges and health risks. one of the main health problems of the crowding is ease transmission of pneumonia by air droplets. this study was aimed to determine the most common causes of bacterial pneumonia during the 2005 hajj season and to relate the findings with clin ... | 2011 | 21623036 |