Table 1.
General characteristics of 143 included publications
| Category | Count |
|---|---|
| Type of citation | |
| Primary peer‐reviewed research | 124 |
| Thesis | 8 |
| Grey literature with primary data | 8 |
| Conference proceeding | 3 |
| Language | |
| English | 142 |
| French | 1 |
| Continenta | |
| North America | 125 |
| USA | 104 |
| Canada | 12 |
| Mexico | 11 |
| Central America/South America/Caribbean | 16 |
| Europe | 2 |
| Australasia | 1 |
| Date of publication | |
| 1950–1959 | 1 |
| 1960–1969 | 20 |
| 1970–1979 | 17 |
| 1980–1989 | 25 |
| 1990–1999 | 30 |
| 2000–2009 | 17 |
| 2010‐Present | 33 |
| Study designa | |
| Observational | 110 |
| Prevalence | 74 |
| Cross‐sectional | 12 |
| Surveillance or monitoring programme | 12 |
| Case‐series or case report | 7 |
| Outbreak report | 6 |
| Case–control | 2 |
| Other | 7 |
| Experimental | 48 |
| Challenge trial | 31 |
| Molecular characterization | 13 |
| Controlled trial | 1 |
| Other | 9 |
| Evaluation of diagnostic tests | 8 |
a
Total may sum to more than 143 studies as some studies contributed to more than one category.