Figure 1From: The association between maternal hepatitis B e antigen status, as a proxy for perinatal transmission, and the risk of hepatitis B e antigenaemia in Gambian children Flow chart of study participants in the HBeAg Study, The Gambia, 1991–1993. 1Origins of HBeAg-positive mothers are the following: GHIS group 1 (n = 18), GHIS group 3 (n = 17), Arthropod study (n = 6), Manduar sero-survey (n = 4), Farafenni sero-survey (n = 6), and Banjul sero-survey (n = 2).Back to article page