Table 1 Search strategy
Steps | Search terms |
|---|---|
Search component A (SARS-CoV-2) | |
 1 | Keywords |
SARS-CoV2 OR SARS-CoV-2 OR Covid19 OR Covid-19 OR "Coronavirus 2019" OR "2019-nCoV" OR "Wuhan coronavirus" OR "Wuhan pneumonia" | |
 2 | Subject headings |
PubMed: SARS-CoV-2, COVID-19 | |
Embase: Severe acute respiratory syndrome coronavirus 2, coronavirus disease 2019 | |
 3 | 1 OR 2 (results for search component A) |
Search component B (Superspreading) | |
 4 | Keywords |
Superspread* OR super-spread* | |
 5 | Subject headings |
Embase: superspreading event | |
 6 | 4 OR 5 (results for search component B) |
Search component C (Dispersion) | |
 7 | Keywords |
Dispersion OR kappa OR variability OR heterogen* OR "secondary case*" OR "20/80 rule" | |
 8 | Subject headings |
Embase: Epidemiological data | |
 9 | 7 AND 8 (results for search component C) |
Inclusion for further assessment | |
 10 | 3 AND 6 AND 9 (Embase) |
 11 | 3 AND 4 AND 7 (PubMed) |
 12 | 1 and 4 and 7 (Web of Science, Cochrane Library, medRxiv, arXiv, bioRxiv) |