| No. | Query |
| #22 | #5 AND #21 |
| #21 | #6 OR #7 OR #8 OR #9 OR #10 OR #11 OR #12 OR #13 OR #14 OR #15 OR #16 OR #17 OR #18 OR #19 OR #20 |
| #20 | mother*:ti,ab |
| #19 | 'mother'/exp |
| #18 | 'newborn'/exp |
| #17 | newborn*:ti,ab |
| #16 | neonate*:ti,ab |
| #15 | 'newborn'/exp |
| #14 | maternofetal:ti,ab |
| #13 | 'materno fetal':ti,ab |
| #12 | maternal:ti,ab |
| #11 | intrauterine:ti,ab |
| #10 | congenital:ti,ab |
| #9 | fetomaternal:ti,ab |
| #8 | 'mother to child':ti,ab |
| #7 | vertical:ti,ab |
| #6 | 'vertical transmission'/exp |
| #5 | #1 OR #2 OR #3 OR #4 |
| #4 | 'zika fever'/exp |
| #3 | zika:ti,ab |
| #2 | zikv:ti,ab |
| #1 | 'zika virus'/exp |