Less than 11% of the target audience completed the dengue vaccination schedule in SP

In the capital, where the target audience is estimated at 600 thousand children and adolescents, 229 thousand first doses (38.16%) and only 128 thousand second doses (21.33%) were administered.

The low immunization rate puts younger people at risk, a group that has the highest number of hospitalizations for dengue after elderly people, a group for which the vaccine has not been released by the National Health Surveillance Agency (Anvisa).

According to Takeda, an 81% efficacy in reducing symptomatic dengue fever was demonstrated 30 days after the first dose. However, according to the pharmaceutical company, there are no studies that confirm its effectiveness in the medium or long term for those who stopped there. This is because 95% of participants in Qdenga development research took both doses and, therefore, the analysis in relation to those who took only the first dose is limited.

In just the first two epidemiological weeks of 2025, the State recorded 30,375 suspected cases of the disease, according to the Ministry of Health’s arbovirus panel. Two deaths were confirmed and 54 are under investigation, according to the department’s system.

What does the government say?

SES reported that, with each new shipment of the vaccine by the Ministry of Health, it offers guidance to municipalities. Asked about the possibility of actively searching for unimmunized young people, the ministry stated that municipal administrations are responsible for defining territorial strategies.