Appendix 1. CENTRAL search strategy

(chorioamnionitis OR intraamniotic OR intra‐amniotic) AND (antibiotics OR antibiotic OR antibiotherapy)

Appendix 2. PubMed search strategy

((chorioamnionitis OR intraamniotic OR intra‐amniotic) AND (antibiotics OR antibiotic OR antibiotherapy)) NOT (animals[mh] NOT humans[mh])

Appendix 3. Embase search strategy

1. exp CHORIOAMNIONITIS/

2. chorioamnionitis.ti,ab.

3. ((intraamniotic adj3 infect*) OR (intra‐amniotic adj3 infect*)).ti,ab

4. exp ANTIBIOTIC AGENT/

5. 1 OR 2 OR 3

6. 4 AND 5

Appendix 4. LILACS search strategy

chorioamnionitis OR corioamnionitis OR corioamnionite

Appendix 5. WHO ICTRP search

WHO International Clinical Trials Registry Platform (ICTRP) will be searched using the following key word: Chorioamnionitis