Search results of the same search strategy perform in 2 different dates

Search results of a Search Strategy executed during the 4th week of January 2020, and was replicated in the 3rd week of June 2020 (June 16, 2020).The search strategy is as follows:SARS-CoV-2 OR SARS-CoV2 OR COVID2019 OR 2019-nCoV OR COVID- 19 OR COVID19 OR 2019-nCoV OR (("novel coronavirus" OR coronavirus OR "new coronavirus") AND (wuhan[tiab])) OR SARS-coronavirus 2[tw] OR “coronavirus 2”[tw] OR "coronavirus disease 2019" OR "2019-novel coronavirus" OR "new coronavirus" OR "COVID-19" [Supplementary Concept] OR "COVID-19 diagnostic testing" [Supplementary Concept] OR "spike glycoprotein, COVID-19 virus" [Supplementary Concept] OR "COVID-19 drug treatment" [Supplementary Concept] OR "LAMP assay" [Supplementary Concept] OR "severe acute respiratory syndrome coronavirus 2" [Supplementary Concept] OR "COVID-19 serotherapy" [Supplementary Concept] OR "COVID-19 vaccine" [Supplementary Concept] NOT ("animals"[MeSH Terms] NOT "humans"[MeSH Terms]) AND ("2019/12/30"[PDat] : "2020/01/05"[PDat])