In the early 2000s, vaccines known as bivalent oral vaccines were developed to target only PV1 and PV3 because of the drop in circulation of the PV2 strain.

在 21 世纪初，由于 PV2 毒传播减少，开发了仅针 PV1 PV3 价口服疫苗。

The new bivalent booster protects you against both the original SARS-CoV-2 strain and Omicron's BA. 4 and BA. 5 subvariants, and it's likely to provide some protection against the newer variants too.

新价加强针能防护新冠原始毒奥密克戎 BQ. 4 BQ. 5 亚变异，而于更新变异，它也可能提供某些防护。

Health officials in Britain and other European countries also offered " bivalent" shots to target different versions of the virus.

英国其他欧洲国家卫生官员也提供了针版本病毒价疫苗。

However, the homologous chromosomes of each bivalent remain tightly bound at chiasmata, the regions where crossing-over occurred.

然而，每个价体源染色体仍然紧密结合在交叉部位，也就是发生交叉区域。

I know we have the bivalent available now.

我知道我们现在有价。

The administration, they've had to borrow, beg and steal money from different programmes to actually be able to purchase the new bivalent boosters from Pfizer and Moderna.

政府得从项目中借钱、乞求甚至挪用资金，才能购买辉瑞莫德纳新价加强针。