There was no significant difference between the fatality rate of patients with single infection of HBV and that of patients with multipleinfection of HBV and other type hepatitis virus.
乙型肝炎病毒与其他肝炎病毒重叠感染与单纯感染比较死亡率无显著差异。
2
Widespread, high levels of infection with the new virus occurred during the summer in the northern hemisphere in multiple countries, followed by even higher levels during the fall and winter months.
北半球一些国家在夏季出现广泛、大量感染新病毒病例，随后在秋季和冬季发生了更高水平的感染。
3
Throughout 2010 and 2011, countries neighbouring Chad – notably Cameroon, CAR and Sudan – have all conducted multiple SIAs, to minimise the risk of re-infection.