NewsDesk @bactiman63

The Institute of Hygiene and Tropical Medicine (IHMT) in Lisbon reports on a new dengue vaccine that was made available in Portugal last week.

Image/Robert Herriman

According to the director of the institute, Filomeno Fortes, the vaccine does not require prior contact with the virus and is effective against the disease and preventing hospitalizations up to four and a half years after vaccination.

The vaccine approved in December by INFARMED can be given to anyone (between ages of 4-60).

In addition, the vaccine protects against all types of dengue – is “80% effective at 12 months” and, in terms of preventing hospitalizations, it is 90.4% effective.

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Fortes also adds that this new vaccine is “completely effective” with regard to dengue variant 2: “With the two doses, the probability of developing even mild symptoms is zero”.


Regarding the other serotypes (1, 3 and 4), those who are vaccinated can develop “a very mild disease”.