孕妇巨细胞病毒感染不能通过哪条途径感染胎儿（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25969' and id < 2178521 and id<>'2178521' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25969' and id > 2178521 and id<>'2178521' order by id asc limit 5