Risk Factors for Acute Hepatitis A Infection in Korea in 2007 and 2009: A Case-Control Study.
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3346/jkms.2013.28.6.908
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Joo Youn SEO
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Bo Youl CHOI
			        		
			        		;
		        		
		        		
		        		
			        		Moran KI
			        		
			        		;
		        		
		        		
		        		
			        		Hye Lim JANG
			        		
			        		;
		        		
		        		
		        		
			        		Hee Suk PARK
			        		
			        		;
		        		
		        		
		        		
			        		Hyun Jin SON
			        		
			        		;
		        		
		        		
		        		
			        		Si Hyun BAE
			        		
			        		;
		        		
		        		
		        		
			        		Jin Han KANG
			        		
			        		;
		        		
		        		
		        		
			        		Dae Won JUN
			        		
			        		;
		        		
		        		
		        		
			        		Jin Woo LEE
			        		
			        		;
		        		
		        		
		        		
			        		Young Jin HONG
			        		
			        		;
		        		
		        		
		        		
			        		Young Seok KIM
			        		
			        		;
		        		
		        		
		        		
			        		Chang Hwi KIM
			        		
			        		;
		        		
		        		
		        		
			        		U Im CHANG
			        		
			        		;
		        		
		        		
		        		
			        		Jong Hyun KIM
			        		
			        		;
		        		
		        		
		        		
			        		Hyeon Woong YANG
			        		
			        		;
		        		
		        		
		        		
			        		Hong Soo KIM
			        		
			        		;
		        		
		        		
		        		
			        		Kyeong Bae PARK
			        		
			        		;
		        		
		        		
		        		
			        		Jae Seok HWANG
			        		
			        		;
		        		
		        		
		        		
			        		Jeong HEO
			        		
			        		;
		        		
		        		
		        		
			        		In Hee KIM
			        		
			        		;
		        		
		        		
		        		
			        		Jung Soo KIM
			        		
			        		;
		        		
		        		
		        		
			        		Gab Jin CHEON
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Department of Preventive Medicine/Institute of Community Health, Hanyang University, College of Medicine, Seoul, Korea. bychoi@hanyang.ac.kr
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Case-Control Studies;
			        		
			        		
			        		
				        		Hepatitis A;
			        		
			        		
			        		
				        		Korea;
			        		
			        		
			        		
				        		Risk Factors
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Acute Disease;
				        		
			        		
				        		
					        		Adolescent;
				        		
			        		
				        		
					        		Adult;
				        		
			        		
				        		
					        		Case-Control Studies;
				        		
			        		
				        		
					        		Child;
				        		
			        		
				        		
					        		Child, Preschool;
				        		
			        		
				        		
					        		Female;
				        		
			        		
				        		
					        		Food Handling;
				        		
			        		
				        		
					        		Hepatitis A/*diagnosis/etiology/prevention & control;
				        		
			        		
				        		
					        		Hepatitis A Antibodies/blood;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Immunoglobulin M/blood;
				        		
			        		
				        		
					        		Infant;
				        		
			        		
				        		
					        		Infant, Newborn;
				        		
			        		
				        		
					        		Interviews as Topic;
				        		
			        		
				        		
					        		Male;
				        		
			        		
				        		
					        		Middle Aged;
				        		
			        		
				        		
					        		Multivariate Analysis;
				        		
			        		
				        		
					        		Odds Ratio;
				        		
			        		
				        		
					        		Referral and Consultation;
				        		
			        		
				        		
					        		Risk Factors;
				        		
			        		
				        		
					        		Seafood;
				        		
			        		
				        		
					        		Travel;
				        		
			        		
				        		
					        		Vaccination;
				        		
			        		
				        		
					        		Young Adult
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Journal of Korean Medical Science
	            		
	            		 2013;28(6):908-914
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	This study aimed to identify the risk factors associated with acute hepatitis A virus (HAV) infection in the Korean population. Participants were recruited from five referral hospitals across the country in 2007 and from 11 hospitals in 2009. Patients with positive anti-HAV IgM antibody tests became the case group, while patients treated for non-contagious diseases at the same hospitals were recruited as controls. A total of 222 and 548 case-control pairs were studied in the 2007 and 2009 surveys, respectively. Data from the surveys were analyzed jointly. In a multivariate analysis, sharing the household with HAV-infected family members (OR, 6.32; 95% CI, 1.4-29.6), contact with other HAV-infected individuals (OR, 4.73; 95% CI, 2.4-9.4), overseas travel in 2007 (OR, 19.93; 95% CI, 2.3-174.4), consumption of raw shellfish (OR, 2.51; 95% CI, 1.8-3.5), drinking bottled water (OR, 1.64; 95% CI, 1.3-8.4), and occupation that involve handling food (OR, 3.30; 95% CI, 1.3-8.4) increased the risk of HAV infection. Avoiding contact with HAV-infected individuals and avoiding raw foods eating could help minimize the risk of hepatitis A infection. Immunization must be beneficial to individuals who handle food ingredients occupationally or travel overseas to HAV-endemic areas.