Country

Egypt

7 outbreaks

Portugal

13 outbreaks

Viet Nam

15 outbreaks

Wallis and Futuna

8 outbreaks

Yemen

13 outbreaks

Zambia

20 outbreaks

Burundi

20 outbreaks

Congo Democratic Republic of the

68 outbreaks

Tokelau

4 outbreaks

Tonga

8 outbreaks