TABLE 1.

Search strategy in database types

Database	Search syntax
PubMed	((“Postnatal Depression” OR “Post‐Partum Depression” OR “Post‐Partum Depression” OR “Postpartum Depression” OR “Post‐Natal Depression” OR “Post Natal Depression”) AND (“2019 novel coronavirus disease” OR COVID19 OR “COVID‐19 pandemic” OR “SARS‐CoV‐2 infection” OR “COVID‐19 virus disease” OR “2019 novel coronavirus infection” OR “2019‐nCoV infection” OR “Coronavirus disease 2019” OR “2019‐nCoV disease” OR “COVID‐19 virus infection”))
Scopus	(((ALL(“Postnatal Depression”) OR ALL(“Post‐Partum Depression”) OR ALL(“Post‐Partum Depression”) OR ALL(“Postpartum Depression”) OR ALL(“Post‐Natal Depression”) OR ALL(“Post Natal Depression”)) AND (ALL(“2019 novel coronavirus disease”) OR ALL(COVID19) OR ALL(“COVID‐19 pandemic”) OR ALL(“SARS‐CoV‐2 infection”) OR ALL(“COVID‐19 virus disease”) OR ALL(“2019 novel coronavirus infection”) OR ALL(“2019‐nCoV infection”) OR ALL(“Coronavirus disease 2019”) OR ALL(“2019‐nCoV disease”) OR ALL(“COVID‐19 virus infection”))))
Web of science	(((TS = (“Postnatal Depression”) OR TS = (“Post‐Partum Depression”) OR TS = (“Post‐Partum Depression”) OR TS = (“Postpartum Depression”) OR TS = (“Post‐Natal Depression”) OR TS = (“Post Natal Depression”)) AND (TS = (“2019 novel coronavirus disease”) OR TS = (COVID19) OR TS = (“COVID‐19 pandemic”) OR TS = (“SARS‐CoV‐2 infection”) OR TS = (“COVID‐19 virus disease”) OR TS = (“2019 novel coronavirus infection”) OR TS = (“2019‐nCoV infection”) OR TS = (“Coronavirus disease 2019”) OR TS = (“2019‐nCoV disease”) OR TS = (“COVID‐19 virus infection”))))