Explanation:

• These are human illnesses caused by parasites, viruses and bacteria that are transmitted by vectors.
• The major vector-borne diseases account for around 17% of all infectious diseases.
• Vectors are living organisms that can transmit infectious diseases between humans or from animals to humans.
• Some common vector-borne diseases are Chikungunya, Dengue fever, Lymphatic filariasis, Zika and Japanese encephalitis. 

Hence all statements are correct.