Location | Wavea | Study population | Mean GT/SIb | Reproduction Number (R) | 95% CIc | Basic or effective | Case definition | Reference | Year published |
---|---|---|---|---|---|---|---|---|---|
Australia | 1st | Community | 2.6 | 1.80 | 1.6–2.0 | Basic | Unconfirmed hospitalizations/deaths | [15] | 2008 |
Brazil | 1st | Community | 4 | 2.68 | Â | Basic | Unconfirmed illness | [16] | 2007 |
Canada | 1st | Community | 3 | 1.50 | 1.5–1.5 | Basic | Unconfirmed deaths | [17] | 2011 |
Canada | 1st | Community | 6 | 2.1 | 2.1–2.1 | Basic | Unconfirmed deaths | [17] | 2011 |
Colombia | 1st | Community | 3 | 1.4–1.5 |  | Effective | Unconfirmed deaths | [18] | 2012 |
Colombia | 1st | Community | 4 | 1.5–1.7 |  | Effective | Unconfirmed deaths | [18] | 2012 |
Denmark | 1st | Community | 2.6 | 2.2–2.4 |  | Effective | Unconfirmed illness | [19] | 2008 |
Denmark | 1st | Community | 4 | 2.8–3.0 |  | Effective | Unconfirmed illness | [19] | 2008 |
Denmark | 1st | Community | 2.6 | 2.8–4.0 |  | Effective | Unconfirmed hospitalizations | [19] | 2008 |
Denmark | 1st | Community | 4 | 3.6–5.4 |  | Effective | Unconfirmed hospitalizations | [19] | 2008 |
Italy | 1st | Community | 3 | 1.03 | 1.00–1.08 | Basic | Unconfirmed hospitalizations | [20] | 2011 |
Mexico | 1st | Community | 3 | 1.30 | Â | Effective | Unconfirmed deaths | [21] | 2010 |
Peru | 1st | Community | 3 | 1.38 | 1.37–1.40 | Effective | Unconfirmed deaths | [22] | 2011 |
Switzerland | 1st | Community | 3.11 | 1.49 | 1.45–1.53 | Basic | Unconfirmed hospitalizations | [23] | 2006 |
Switzerland | 1st | Community | 3.4 | 1.50 | Â | Basic | Unconfirmed deaths | [24] | 2009 |
United Kingdom | 1st | Community | 2.6 | 1.7 | Â | Basic | Unconfirmed deaths | [10] | 2006 |
United Kingdom | 1st | Community | 4.1 | 2.10 | Â | Effective | Unconfirmed illness | [25] | 2006 |
United Kingdom | 1st | Community | 6 | 2.00 | Â | Basic | Unconfirmed illness | [26] | 2005 |
United Kingdom | 1st | Community | NR | 1.16–2.94 |  | Effective | Unconfirmed illness | [27] | 2010 |
United Kingdom | 1st | Students | NR | 1.43–5.36 |  | Effective | Unconfirmed illness | [27] | 2010 |
USA | 1st | Community | 4 | 1.34–3.21 |  | Effective | Unconfirmed illness | [28] | 2008 |
Various | 1st | Community | 4 | 1.2–3.0 |  | Effective | Unconfirmed illness | [29] | 2007 |
Various | 1st | Community | 4 | 2.1–7.5 |  | Effective | Unconfirmed illness | [29] | 2007 |
 | 1st | Sailors | 4 | 4.97 |  | Effective | Unconfirmed illness | [28] | 2008 |
Canada | 2nd | Community | 3.6 | 2.26 | 1.95–2.63 | Basic | Unconfirmed illness | [30] | 2010 |
Canada | 2nd | Community | 3.6 | 1.49 | 1.42–1.55 | Basic | Unconfirmed illness | [30] | 2010 |
Canada | 2nd | Community | 3 | 2.40 | 2.4–2.5 | Basic | Unconfirmed deaths | [17] | 2011 |
Canada | 2nd | Community | 6 | 4.3 | 4.2–4.4 | Basic | Unconfirmed deaths | [17] | 2011 |
Denmark | 2nd | Community | 2.6 | 1.22–1.24 |  | Effective | Unconfirmed illness | [19] | 2008 |
Denmark | 2nd | Community | 4 | 1.29–1.33 |  | Effective | Unconfirmed illness | [19] | 2008 |
Denmark | 2nd | Community | 2.6 | 1.2–1.3 |  | Effective | Unconfirmed hospitalizations | [19] | 2008 |
Denmark | 2nd | Community | 4 | 1.3–1.4 |  | Effective | Unconfirmed hospitalizations | [19] | 2008 |
Germany | 2nd | Community | 1 | 1.58 | 0.03–10.3 | Basic | Unconfirmed deaths | [31] | 2007 |
Germany | 2nd | Community | 3 | 2.52 | 0.75–5.85 | Basic | Unconfirmed deaths | [31] | 2007 |
Germany | 2nd | Community | 5 | 3.41 | 1.91–5.57 | Basic | Unconfirmed deaths | [31] | 2007 |
Italy | 2nd | Community | 3 | 1.38 | 1.3–1.5 | Basic | Unconfirmed hospitalizations | [20] | 2011 |
Mexico | 2nd | Community | 3 | 1.30 | Â | Effective | Unconfirmed deaths | [21] | 2010 |
New Zealand | 2nd | Military | >1.5 | 1.3–3.1 |  | Basic | Unconfirmed hospitalizations | [32] | 2006 |
Switzerland | 2nd | Community | 2.28 | 3.75 | 3.6–3.9 | Effective | Unconfirmed hospitalizations | [23] | 2006 |
Switzerland | 2nd | Community | 3.4 | 2.40 | Â | Basic | Unconfirmed deaths | [24] | 2009 |
United Kingdom | 2nd | Community | 3 | 1.39 | 1.36–1.43 | Effective | Unconfirmed deaths | [33] | 2008 |
United Kingdom | 2nd | Community | 6 | 1.84 | 1.75–1.92 | Effective | Unconfirmed deaths | [33] | 2008 |
United Kingdom | 2nd | Community | 6 | 1.55 | Â | Basic | Unconfirmed illness | [26] | 2005 |
United Kingdom | 2nd | Community | 2.6 | 1.50 | Â | Basic | Unconfirmed deaths | [10] | 2006 |
USA | 2nd | Community | 2.5 | 2.14 | Â | Basic | Unconfirmed deaths | [34] | 2009 |
USA | 2nd | Community | NR | 2.20 | 1.55–2.84 | Effective | Unconfirmed illness | [35] | 2007 |
USA | 2nd | Community | 4 | 2.00 | 1.7–2.3 | Effective | Unconfirmed deaths | [36] | 2004 |
USA | 2nd | Community | 2.85 | 1.73 | Â | Effective | Unconfirmed deaths | [14] | 2007 |
United Kingdom | 3rd | Community | 3 | 1.39 | 1.29–1.49 | Effective | Unconfirmed deaths | [33] | 2008 |
United Kingdom | 3rd | Community | 6 | 1.82 | 1.61–2.05 | Effective | Unconfirmed deaths | [33] | 2008 |
United Kingdom | 3rd | Community | 6 | 1.70 | Â | Basic | Unconfirmed illness | [26] | 2005 |
Median reproduction number for the 1918 pandemic: 1.80; Interquartile range 1.47–2.27 |