“…2), and the Republic of Guinea-Bissau (0.2). The symptomatic rotavirus incidence rates were the same at 0.1 episodes per child-year of observation for four high-income countries/regions and five low and middle-income countries (including Vietnam) where rotavirus testing was available (Velázquez et al, 1996;Anders et al, 2015;Gurwith et al, 1981;Paul et al, 2014;Qadri et al, 2007;Cravioto et al, 1998;Hasan et al, 2006;Mata et al, 1983;Naficy et al, 1999;Reves et al, 1989;Grinstein et al, 1989;Ahmed et al, 2014a;Simhon et al, 1990;Oyejide et al, 1988;Georges-Courbot et al, 1988;Ruuska & Vesikari, 1991;Zheng et al, 1989).…”