Conclusion: HB has a certain character of familial assemblage. Contact in daily life is the main wayofinfection of hepatitis b.
结论:乙肝有一定的家庭聚集性,日常生活接触已成为乙肝主要的传播途径。
2
In this paper, the pathogenic fungi, the wayofinfection and spread of black spot ( Alternatia Helianthi) in sunflower, and synthetic control et al were discussed.
本文对向日葵黑斑病病原菌、分布、危害、侵染传播途径及综合防治措施等进行了叙述。
3
The first step towards reducing the number of babies infected in this way is to prevent HIV infection in women, and to prevent unwanted pregnancies.