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Table 1 Characteristics of epidemiological clusters, the Netherlands, 1 October 2019–31 March 2020 (n = 46 cases)

From: Outbreaks of mumps genotype G viruses in the Netherlands between October 2019 and March 2020: clusters associated with multiple introductions

Epidemiological cluster

Cases

Province of symptom onset

Description of setting

Place of infection of source or co-primary case (if abroad)

2019-7

12

South Holland, North Holland

Party, secondary school

 

2019-8

4

South Holland, Gelderland

Football match

 

2019-9

2

South Holland

Secondary school

 

2019-10

3

South Holland

Hotel, family

 

2019-11

2

South Holland

School

 

2019-12

2

South Holland

Family

 

2020-1

2

North Holland

Friends

Western Europe

2020-2

4

Groningen

Swimming club, family

 

2020-3

2

Zeeland

Partners

Western Europe

2020-4

2

Groningen

Holiday abroad

Central Europe

2020-5

2

North Holland, Utrecht

Winter sport trip abroad

Western Europe

2020-6

3

North Holland

Family

 

2020-7

3

North Holland

Partners and friend

North America

2020-8

3

Gelderland

Family