Australia
|
1st
|
Community
|
2.6
|
1.80
|
1.6–2.0
|
Basic
|
Unconfirmed hospitalizations/deaths
|
[15]
|
2008
|
Brazil
|
1st
|
Community
|
4
|
2.68
| |
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
| |
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
| |
Basic
|
Unconfirmed deaths
|
[24]
|
2009
|
United Kingdom
|
1st
|
Community
|
2.6
|
1.7
| |
Basic
|
Unconfirmed deaths
|
[10]
|
2006
|
United Kingdom
|
1st
|
Community
|
4.1
|
2.10
| |
Effective
|
Unconfirmed illness
|
[25]
|
2006
|
United Kingdom
|
1st
|
Community
|
6
|
2.00
| |
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
| |
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
| |
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
| |
Basic
|
Unconfirmed illness
|
[26]
|
2005
|
United Kingdom
|
2nd
|
Community
|
2.6
|
1.50
| |
Basic
|
Unconfirmed deaths
|
[10]
|
2006
|
USA
|
2nd
|
Community
|
2.5
|
2.14
| |
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
| |
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
| |
Basic
|
Unconfirmed illness
|
[26]
|
2005
|
Median reproduction number for the 1918 pandemic: 1.80; Interquartile range 1.47–2.27
|