Table 3. Summary of incidence of sore throat and GAS pharyngitis in children at risk of acute rheumatic fever.
| Study ID | Pharyngitis Incidence (per 100 child-years) | GAS Pharyngitis Incidence (per 100 child-years) | Country, Region | Climate | Income |
|---|---|---|---|---|---|
| El-Kholy 1972 [18] | Not done | 31.2 | Egypt, Africa | Arid | Low-middle |
| Nicolle 1990 [24] | Not done | Rankin Inlet: 4.9 St Therese Point: 9.4 | Canada, North America | Cold | High |
| Lennon 2000 [26] | Not done | 50 | New Zealand | Temperate | High |
| Nandi 2001 [25] | 705 | 95 | India, Asia | Temperate | Low |
| McDonald 2006 [7] | Adults + children: 19 | Adults + Children: 4 | Australia, Oceania | Tropical | High |
| Children: 8 | Children: 0 | ||||
| McDonald 2007 [10] | Adults + children: 480 | Adults + Children: 32 | Australia, Oceania | Arid | High |
| Children: 457 | Children: Not done | ||||
| Steer 2009 [15] | 162.9 | 14.7 | Fiji, Oceania | Tropical | Upper-middle |
| Kumar 2009 [29] | 232 | 5.4 | India, Asia | Temperate | Low |
| Engel 2012 [28] | 0.84 | 0.18 | South Africa | Temperate | Upper-middle |
| Kumar 2012 [27] | Not done | 16.6 | India, Asia | Temperate | Low |
| Wu 2016 [23] | 29.8 | 2.68 | China, Asia | Cold | Upper-middle |
GAS, group A streptococcus