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Dengue Vaccine Shows Effectiveness Under Real-World Conditions During Brazil's 2024 Outbreak

Summary by Medical Xpress
An international team of researchers has demonstrated that the tetravalent dengue vaccine known as Qdenga provided significant protection against the disease under real-world conditions, during the large 2024 epidemic in São Paulo, Brazil.

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A team of scientists has provided the first evidence of the actual effectiveness of the tetravalent dengue vaccine, Qdenga, outside of clinical trials. The study, carried out in Brazil during the outbreak of 2024, revealed that immunization managed to decrease hospitalizations of patients by 68%. These findings, crucial for public health strategies, were recently published in the journal The Lancet Infectious Diseases (The Lancet Infectious Dise…

A group of researchers found that the tetravalent vaccine administered during a dengue outbreak in Brazil in 2024 reduced hospitalisation by 68%.

·Buenos Aires, Argentina
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A study by an international team of researchers has shown that the tetravalent vaccine against dengue 'Qdenga' offers "significant" protection against the disease in real conditions, during the great epidemic of 2024 in São Paulo, Brazil.

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diarioestrategia.cl broke the news in on Wednesday, October 1, 2025.
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