Tonga

Disease	Transmission scenario
Malaria	Non-endemic
Dengue	Sporadic outbreaks (most recently in 2018)
Zika	Outbreak in 2016
Chikungunya	No reported cases
Lymphatic filariasis	Elimination validated

Diseases	Vectors
Malaria	No vectors present
Dengue	Aedes aegypti Aedes albopictus Aedes cooki Aedes kesseli Aedes tabu Aedes tongae s.s.
Zika	Aedes aegypti Aedes albopictus Aedes polynesiensis
Chikungunya	Aedes aegypti Aedes albopictus Aedes polynesiensis
Lymphatic filariasis	Aedes oceanicus Aedes cooki Aedes kesseli Aedes tabu Aedes tongae s.s.