stillbirths

health risks could include specific types of cancers , stillbirths and acute radiation syndrome if a full meltdown occurs , experts said .

专家说，如果核反应堆完全熔解，伴随的健康风险可能包括特定类型的癌症、死胎和急性辐射综合症。

Porcine parvovirus ( PPV) is the major causative virus in a syndrome of reproductive failure in swine, which includes stillbirths, mummified fetuses, early embryonic death, and infertility.

猪细小病毒（Porcine parvovirus，PPV）是引起猪繁殖障碍综合症的主要病原，可引起死产、木乃伊胎、胚胎的早期死亡及不孕不育等。

Weak vital registration systems, especially in the regions where most stillbirths occur, limit the availability of data and hamper the calculation of precise estimates.

生命登记系统存在的薄弱环节，尤其是在死产发生最高的地区，使数据的可用性受到限制，同时也阻碍了对精确估值的计算。