#	Query
S21	S5 AND S20
S20	S6 OR S7 OR S8 OR S9 OR S10 OR S11 OR S12 OR S13 OR S14 OR S15 OR S16 OR S17 OR S18 OR S19
S19	TI Mother* OR AB Mother*
S18	(MH "Mothers+")
S17	TI Newborn* OR AB Newborn*
S16	TI Neonate* OR AB Neonate*
S15	(MH "Infant, Newborn+")
S14	TI Maternofetal OR AB Maternofetal
S13	TI Materno Fetal OR AB Materno Fetal
S12	TI Maternal OR AB Maternal
S11	TI Intrauterine OR AB Intrauterine
S10	TI Congenital OR AB Congenital
S9	TI Fetomaternal OR AB Fetomaternal
S8	TI Mother to Child OR AB Mother to Child
S7	TI Vertical OR AB Vertical
S6	(MH "Disease Transmission, Vertical")
S5	S1 OR S2 OR S3 OR S4
S4	(MH "Zika Virus Infections")
S3	TI Zika OR AB Zika
S2	TI ZikV OR AB ZikV
S1	(MH "Zika Virus")