Insects transmit diseases when, probing for blood vessels, they inject saliva together with viral, bacterial, or parasitic pathogens into the skin of mammalian hosts. In mice, scientists found that mosquito spit weakened blood vessels, making them more permeable, or "leaky".

Up to 872 cases of dengue fever, including o­ne death, have been reported in the Mekong Delta province of Ben Tre in the last six months, tripling those in the same period last year.

14 June 2016 - The health sector warned provinces and cities nationwide to be extra vigilant against dengue as risk of the return of the disease is high in rainy season, according to the Ministry of Health (MoH).

The Preventive Health Centre in HCM City will continue its dengue-fever preventive programme this year as the city has seen a downward trend in the last two months.

Nearly 900 cases of dengue fever have been reported in the Central Highlands of Vietnam from the beginning of 2016, up over 20 percent compared to the same period last year.

• Mexico to get world's first dengue fever vaccine (12/10/2015)
• Dengue fever outbreaks worsen in Vietnam (10/21/2015)
• A new study is reshaping how scientists look at and understand a deadly virus (09/25/2015)
• Update on the Dengue situation in the Western Pacific Region (09/09/2015)
• Possible dengue vaccines and and therapeutics (07/22/2015)