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Table 1 Number of literature sources available per outcome per country, broken down by outcomea

From: Estimation of the burden of varicella in Europe before the introduction of universal childhood immunization

Country N of sources Outcome
Country N papers N grey literature Sero-prevalence Primary care incidence Hospitalization incidence Mortality
Austria 1 1 1    1
Belgium 5 4 4 3 2 3
Bulgaria 0 4   3   1
Croatia 1 4 1 3   1
Cyprus 0 3   2   1
Czech Rep 0 4   3   1
Denmark 0 1     1
Estonia 0 4   3   1
Finland 4 4 3 3   2
France 6 7 3 6 3 4
Germany 7 1 2 2 2 2
Greece 4 2 1 1 3 1
Hungary 1 4   4   1
Iceland 1 1 1    1
Ireland 4 4 3   3 2
Italy 14 3 7 9 5 2
Latvia 0 3   2   1
Lithuania 0 4   3   1
Luxembourg 1 1 1 1 1 1
Malta 0 4   3   1
Netherlands 7 2 4 5 4 2
Norway 0 1     1
Poland 3 4 1 5 1 1
Portugal 3 1 2 1   1
Romania 1 4   4   1
Slovakia 1 4 1 3   1
Slovenia 2 4 1 4   1
Spain 22 2 10 5 9 3
Sweden 4 1 1   3 1
Switzerland 6 1 5 1   1
UK 13 4 5 12 3 4
Total 101 18 57 91 39 46
Unique data sources    52 37 39 15
  1. aThis includes literature sources that were not eligible for the estimation of the burden of varicella disease in Europe