Table 2

Spread of pandemic (H1N1) virus in WHO European Region during 2008-09, 2009-2010, and 2010-2011 influenza seasons

Season

W-E R2

S-N R2

N of countries †


2010-2011


Western part of the WHO European region §

0.244*

0.040

36


Western and central parts of WHO European region ‡

0.080

0.030

45


WHO European region

0.002

0.000

51


2009-2010


Western part of the WHO European region §

0.282*

0.037

26


Western and central parts of WHO European region ‡

0.088

0.043

30


WHO European region

0.001

0.051

35


2008-2009


Western part of the WHO European region §

0.731*

0.000

25


Western and central parts of WHO European region ‡

0.852*

0.020

34


WHO European region

0.330*

0.002

39


† Federal districts in the United Kingdom and the Russian Federation referred as separate countries in this analysis

*significant at 0.05 level

W-E west to east spread; S-N south to north spread; R2: squared correlation coefficient

§ countries located before longitude line of 30 degrees east

‡ countries located before longitude line of 60 degrees east

Martirosyan et al. BMC Infectious Diseases 2012 12:36   doi:10.1186/1471-2334-12-36

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